— “After the divorce, you’ll get the apartment — but my mother will live there,” her husband declared with a smirk.

— “After the divorce, you’ll get the apartment — but my mother will live there,” her husband declared with a smirk.

Marina slowly set aside the calculator she had just been using to work out the family budget. Their living room rang with silence. Outside the March sun lit up the rooftops of Moscow, while inside the room lay in twilight — Igor had deliberately drawn the curtains before the conversation.

— “What do you mean — your mother will live in MY apartment?” Marina pulled some documents from a folder. “Igor, do you realize how absurd your proposal is?”
— “A perfectly NORMAL proposal,” he said, sprawling in the armchair with one leg crossed over the other.

— “Formally, the apartment will be yours — on paper. But my mom is elderly; she needs care. And I’ll come by every day to help her. Convenient, right? You get the apartment, as the law requires — and Mom is looked after.”

Marina studied his face closely. In fifteen years of marriage she had learned to read between the lines. Igor was hiding something, and that “something” clearly had to do with money.

— “Valentina Petrovna lives just fine in her two-room apartment in Khimki,” Marina said calmly. “She’s seventy-two, she does Nordic walking, and she runs knitting classes at the local community center. What ‘care’ are you talking about?”

— “None of your business!” Igor snapped. “I’ve decided — end of discussion. You’ll sign the divorce agreement with that condition, or you won’t get anything at all. I’ll drag you through court for years, wear you down with lawsuits.”

Marina took out a notebook and began writing something down. Igor twitched nervously.

— “What are you scribbling?”
— “Calculating,” she replied shortly. “Your salary as a senior manager at a construction firm is 180,000 rubles. Mine as a senior economist is 90,000. Over fifteen years of marriage, I contributed to the family budget…”

— “What difference does it make?!” Igor sprang up from the chair. “You didn’t work for three years when Alice was little!”
— “Two years and seven months,” Marina corrected. “And even while on maternity leave I did bookkeeping remotely for three sole proprietors. The income was thirty thousand a month. All receipts are saved; all transfers are recorded.”

— “You’ve lost your mind with your numbers!” Igor began pacing the room. “What receipts, what transfers? We were a FAMILY!”
— “We were,” Marina agreed. “And that’s exactly why I tracked every penny. Do you know how many times your mother ‘borrowed’ money from us and never paid it back? Thirty-seven times. Total — 843,000 rubles.”

Igor stopped in the middle of the room. His face flushed a deep red.

— “Don’t you DARE bring my mother into this! She helped us with Alice!”
— “She helped fourteen times in fifteen years,” Marina said, turning a page in her notebook. “Total time — forty-two days. At the average cost of a nanny in Moscow, that’s about 126,000 rubles. Which leaves a debt of 717,000.”

— “You… you’re some kind of MONSTER,” Igor breathed. “Who even keeps statistics like that in a family?”
— “I do. Because I’m an economist. And because I noticed a strange pattern — your mother’s money would always ‘disappear’ two or three days before your ‘corporate parties.’ Remember that August when she urgently needed 200,000 for an operation? And the day after that, you bought a new watch. A Breitling Navitimer, model AB0127 — 212,000 rubles.”

Their daughter Alice peeked out of her room.

— “Mom, Dad, why are you yelling?”
— “Go do your homework, sweetheart,” Igor said quickly. “Your mom and I are just… talking.”

When the door closed behind their daughter, he turned back to his wife.

— “Fine. You want the truth? Mom is selling her apartment in Khimki. The buyers are already lined up — they’re offering a good price, twelve million. But she needs somewhere to live! So she’ll live in our… I mean, in your apartment.”

— “Why would Valentina Petrovna sell her apartment?” Marina made a note in her notebook.
— “She wants to travel in her old age,” Igor said, looking away. “It’s her dream.”

Marina opened her laptop and started searching for something.

— “Strange. Here’s her social media page. Her last post was yesterday: ‘Finished knitting a new throw for the living room. So glad I don’t have to go anywhere — home is best.’ Not a single post about travel in the last five years.”

— “You’re stalking my mother?!” Igor protested.
— “I’m tracking FACTS,” Marina cut him off. “And the facts say you’re lying. Who needs those twelve million? You?”

Igor was silent, clenching and unclenching his fists. Marina continued:

— “Three months ago you started staying late at work. But not at work. I checked — your office pass logs you out at six in the evening, and you get home at eleven. Five hours, Igor. Where do you spend them?”

— “That’s not your—”
— “It’s MY business because you’re spending our joint money. In three months, 480,000 rubles has been charged to the credit card. Restaurants, gifts, the Metropol Hotel — a luxury suite, six times.”

— “How did you—” Igor began, then stopped.
— “I do our family bookkeeping, remember?” Marina opened a new file on her laptop. “I have access to all our accounts. And I see every transaction. Here, for example — a purchase at a jewelry boutique on Tverskaya: 150,000 rubles. Diamond earrings. You didn’t give them to me. And not to Alice either.”

— “Maybe I bought them for my mom!” Igor blurted out.
— “Valentina Petrovna hasn’t worn earrings for about ten years — she’s allergic to metal,” Marina replied evenly. “She told me herself. More than once. So who are the earrings for, Igoryok?”

He sank heavily back into the chair.

— “There’s… someone. But it’s NOT what you think!”
— “I’m not thinking — I KNOW. Elena Andreyevna, twenty-eight, a sales manager at your company. Height: 1.75 meters. Weight: about sixty kilos. Clothes size: forty-six. Prefers Italian food and semi-sweet white wine.”

— “You hired a private detective?!” Igor gasped.
— “Why would I?” Marina shrugged. “It’s enough to analyze your purchases. ‘Italia’ restaurant — eight times, always a table for two, always the same wine. A women’s size-46 Valentino dress — a gift for February 23rd. A strange date for a gift until you learn it’s Elena’s birthday. Public information from your company’s corporate website.”

Igor wiped his sweaty forehead.

— “So what? Yes, I have… a relationship. But that’s no reason to give you the apartment!”
— “The apartment will be mine by law anyway — it’s registered in my name; it was a gift from my parents for our wedding.”

“You’re only registered here. But the division of the rest of the property is more interesting,” Marina said, opening a new folder of documents. “You see, Igor, I calculated your real income.”
— “What do you mean, ‘real’?” …

— “Your salary is one hundred eighty thousand. But you spend, on average, three hundred twenty thousand a month. The difference is one hundred forty thousand. Over a year, that’s one million six hundred eighty thousand. Where does the money come from, Igor?”

— “Bonuses. Incentives…”

— “All your official bonuses go through accounting. Last year you received three hundred thousand in bonuses. That’s it. Which leaves an unexplained income of one million three hundred eighty thousand rubles a year.”

Igor turned pale.

— “You won’t be able to prove anything.”

— “And I don’t need to prove anything. During the divorce I’ll submit these calculations and ask the court to divide not only the official income, but the real one as well. The court will order a financial audit. I think your management will be very interested to learn where a chief procurement manager gets extra money.”

— “You… you’re blackmailing me?”

— “I’m working with NUMBERS. Look — over the past year your company purchased construction materials totaling two hundred million rubles. And the prices are inflated on average by three to four percent compared to the market. That’s six to eight million rubles in overpayment. If we assume you receive a kickback equal to twenty percent of the overpayment…”

— “ENOUGH!” Igor shouted. “What do you want?”

Marina closed the laptop and looked at her husband steadily.

— “I want JUSTICE. A divorce with no conditions. The apartment stays with me and Alice — it’s mine anyway. Child support — twenty-five percent of your official salary, as required by law. And your mother doesn’t set foot in my apartment.”

— “And if I refuse?”

— “Then I’ll send my calculations not only to the court, but to your CEO as well. Mr. Vorontsov is very strict about financial integrity. Remember how he fired Semyonov for taking three thousand rubles from the cash register?”

Igor sprang up and started pacing the room.

— “You’ll destroy me! I have my job, my reputation, my mother…”

— “Your mother will get her twelve million for the apartment and live comfortably. Unless, of course, you take that money from her. And that’s exactly what you planned, isn’t it? Sell your mother’s apartment, pocket the money for yourself and Elena’s new home, and move Valentina Petrovna into my apartment. Clever. Only it won’t work.”

The doorbell rang. Igor flinched.

— “Who could that be?”

— “Your mother,” Marina said calmly, getting up to answer the door. “I invited her for tea. And I’m going to tell her a few things.”

— “NO!” Igor lunged for the door, but Marina was already opening it.

Valentina Petrovna stepped into the apartment, taking off her coat.

— “Marinochka, dear, thank you for the invitation! Igoryok, you’re home too? Wonderful!”

— “Mom, maybe not right now…” Igor began, but Marina cut him off.

— “Valentina Petrovna, come into the living room. We need to discuss an important matter. It concerns your apartment in Khimki.”

The elderly woman raised her eyebrows in surprise.

— “My apartment? What about it?”

— “Igor says you’re planning to sell it for twelve million.”

— “SELL?!” Valentina Petrovna threw up her hands. “I’ve lived there my whole life! My friends are there, my knitting group, my favorite clinic is nearby! Igor, what nonsense is this?”

Igor blushed.

— “Mom, I just… it’s a misunderstanding…”

— “It’s no misunderstanding,” Marina said, pulling papers from her folder. “Here’s a copy of the preliminary purchase-and-sale agreement for your apartment. The signature is forged, but the handwriting looks very much like yours, Valentina Petrovna. Igor really tried — he must have been practicing.”

— “What?!” the elderly woman clutched at her chest. “Igor, is that true?”

— “Mom, I’ll explain everything…”

— “And while you’re at it, explain where the money went that you ‘borrowed’ from us supposedly for Valentina Petrovna,” Marina added. “Eight hundred forty-three thousand rubles. For medicines, surgeries, treatment… And your mother, it turns out, didn’t even know about these loans.”

— “Igor Mikhailovich!” Valentina Petrovna rose slowly, and steel rang in her voice. “So you LIED to your wife, saying you were taking money for me?”

— “Mom, it’s not like that…”

— “Then how is it?!” the elderly woman stamped her foot. “Marinochka is showing you numbers, documents! You wanted to sell MY apartment? Where were you planning to put me?”

Marina answered calmly:

— “With us. Meaning with me. After the divorce, the apartment would stay with me, but you were supposed to live here. And Igor planned to spend the money from your apartment on a new place for himself and his… mistress.”

— “A mistress?!” Valentina Petrovna sank back down. “You have another woman?”

Igor stayed silent, staring at the floor.

— “You know what,” Valentina Petrovna said, turning decisively to Marina. “Show me all your calculations. Every last ruble. I want to know what my son has been spending the family money on.”

For the next hour Marina methodically laid out the facts: every purchase, every transfer, every restaurant visit. Valentina Petrovna listened, her face growing darker and darker.

— “Four hundred eighty thousand in three months on a woman who’s nothing to him,” she concluded. “And for my birthday — a bouquet for fifteen hundred. Thanks, son. My daughter-in-law opened my eyes.”

— “Mom, don’t listen to her! She’s twisting everything!”

— “Numbers don’t lie, Igoryok,” Valentina Petrovna snapped. “I may be a pensioner, but I’m not stupid. Marina calculated everything correctly. And you… you’re a TRAITOR. You betrayed your wife, and you tried to set me up too.”

She turned to Marina.

— “Sweetheart, if you need my help during the divorce — testimony or anything else — come to me. And I’ll visit Alice too, if you allow it. The granddaughter isn’t to blame for anything.”

— “Of course, Valentina Petrovna. Alice loves you.”

— “Mom, what, you’re on her side?!” Igor wailed.

— “I’m on the side of the TRUTH,” the elderly woman answered harshly. “And you know what? Forget my address. Forget my phone number too. You thought you’d sell my apartment… I’ll cut you out of my will and deed everything to my granddaughter! You won’t get a kopeck!”

She marched toward the door, but stopped on the threshold.

— “Marina, you’re doing everything right. Mathematics is a great thing. It will bring even a swindler into the open. Good luck to you, dear.”

When the door closed behind Valentina Petrovna, silence settled over the apartment. Igor sat in the chair, his head in his hands.

— “You ruined everything,” he said dully.

— “No, Igor. You ruined everything yourself. I just calculated your destruction. In rubles and kopecks.”

Marina gathered the documents into her folder and stood up.

— “Tomorrow I’ll be waiting for you at the notary’s. Ten a.m. We’ll sign the divorce agreement on my terms. If you don’t show up — at eleven all my calculations will be on Mr. Vorontsov’s desk.”

— “I’ll come,” Igor nodded helplessly.

— “And one more thing,” Marina paused in the doorway. “I’ve also calculated something about your mistress. For example, out of the jewelry and clothes you gave her — totaling two million three hundred thousand rubles — half was bought with MY money. From our joint account. That’s called dissipation of marital property. It can be recovered. With interest.”

— “You contacted her?!”

— “Not yet. But if you keep being stubborn — I will. And I’ll tell her about your financial schemes at work. I think she’ll be very interested to know who she’s involved with. A man who steals from the company and forges his mother’s signature isn’t exactly a great match.”

Igor jumped up.

— “That’s blackmail!”

— “That’s mathematics,” Marina corrected. “A simple equation: you stole — you’ll return it. Or you’ll lose everything. The choice is yours.”

A month later, the divorce was finalized. Igor moved into a rented one-bedroom on the outskirts of Moscow — Elena left him when she learned the truth about his schemes. At work, a financial review began after an anonymous letter (Marina did end up sending part of the calculations, without naming exact amounts). Igor was demoted to an ordinary manager with a salary of sixty thousand.

Valentina Petrovna kept her word — she struck her son from the will, leaving everything to her granddaughter Alice. And she regularly came to visit her former daughter-in-law, bringing her signature cabbage pies.

As for Marina, she hung a beautiful frame in her office with her life motto: “Numbers don’t lie. They simply show the truth in its purest form.”

When, six months later, Igor tried to reduce child support citing a drop in income, Marina simply submitted to the court her calculations of his real earnings from previous years. The court kept the child support the same and ordered Igor to pay the arrears.

— “You destroyed me with your numbers!” he yelled after the hearing.

— “No,” Marina replied calmly. “You destroyed yourself with your lies. I just calculated everything. Down to the last kopeck.”