Take a board with 64 squares on it. Put a grain of wheat on the first square--two on the second--four on the third. Keep doubling in this manner and you will find there isn't enough wheat in the world to fill the sixty-fourth square. It can be the same with compound interest.
Foraminifera 9-Hart Bailey's Beam is bored. He relieves that boredom by traveling back in time to sometime before the high radiation levels and after the invention of anesthesia-you know, in case of accidents. He's read of the Mafia in New York City of the 1950s. He think that might be a place to start. He finds five you men, all dressed in same color jacket, and asks directions to the recruiting office of the "dread Camorra." He assures them he has plenty of money in his carry-all...
A writing prompt that I decided to build out into a story. I was thinking of the old twist at the end pulp stories in terms of the genre with a bit of a supra-normal element. A Reddit subreddit called r/red63tennis has some strange coincidences until one of its users seeks some help. It's a short piece but I had fun writing it.