I went to the mall to buy my best friend a birthday present. It was the day after her birthday, so I thought that I had procrastinated long enough. I had to be at work by twelve, and then I had to go right to my other job. I would not have time to go get her present later. Since I was already at the mall, I figured I would pick up lunch for my co-worker and myself. I got his pizza, and then I went to Subway. My total came out to 6.21. I handed the man at the register a twenty, and I told him that I had a penny. Well, right as I was saying that, he hit enter. So all of my change came out of that cool machine, that a lot of stores have now, and the man took it. I still had my penny in my hand. He looked at the change and then at the drawer. He was trying to figure out what he should give me since I told him that I had a penny. I told him to take my penny and give me a nickel. He didn't comprehend how that was possible. To stop his suffering, I told him that it was fine and to just give me all of the change. He said that he was sorry. I took the change and went to work. That incident only helped me believe that I am in the right when I will not let my students use calculators.