Twentyfold Payback After a Potluck

When my colleagues find out that I'm pretty good at cooking, they start organizing dinners at my place. Lucy Holt, one of the junior accountants, suggests that we split the groceries evenly between us. As a result, I don't think I can reject their request without being rude. On my last day of work, the group gathers at my place for one last meal. "You're such a good cook, Jess! We'll all be transferring you 500 dollars later. It's just a token of our appreciation," Lucy declares with a bright smile. But the very next day, she sends me a message. "Hey, Jess. You know it's illegal to operate an unlicensed catering business from your home, right? Your house will get sealed off for further investigation. More importantly, the value of goods has passed the threshold of 10,000 dollars, which means the fine you'll have to pay is probably going to be about 20 times that amount. "Since we worked together, we decided not to report you to the authorities. We'll just settle this matter privately. All you have to do is give us the fine you would've had to pay instead." This is how I realized that, combined with yesterday's meal, the total amount they've given me for groceries thus far is exactly 10,001 dollars.