This is the slot machine I made, and it can calculate how many Jackpots I got within ten thousand times, it should always be near 625 times, because the chance of getting a Jackpot is 1/16, so the average in ten thousand times is 625 times.
Before, the slot machine was made for fun, and see our luck, then I came up with an idea of counting how many Jackpots I can get within 100 times, but it takes too long to wait for the slot machine to finish 100 times, so I took of the spinning part, and it will be faster for calculating.