Yesterday on the subway platform I saw three men standing together, huddled around something small. I was a bit taller than each of them, and I got curious, so I walked close enough to the men without being too obvious, while still being able to see over their shoulders.
They were looking at an iPhone. One man, in the middle, was using the calculator feature. I can't recall the exact numbers he was using, but it was something close to this:
4,500,500/ 3 =
He then paused, looked at the other two men, and pressed enter.
1,500,000 came on the screen.
They were still, until one of them slowly walked away and then jumped high into the air, celebrating. They then all high-fived, sweating, and the train came.