What do you do with the left over hamburger meat after you make a meal?

In her 10th day in her first apartment, my daughter called me and asked ?

What do you do with the left over hamburger meat after you make a meal?

At first, I thought about laughing out loud. I am not much of a cook, and I am probably the last person I would ask a question about cooking unless it was about making an omelet or something simple like that, but it was clear, my daughter was asking a serious question.

Well, there are two ways to handle hamburger after you make a meal. You can put the leftover meat back in the refrigerator but you have to cook it in the next couple of days.

Or the simpler way is to cook all the meat and meal and have some leftovers ready to microwave when you are hungry.

Ok. Thanks!