How did the lottery prize come from?

This is the way to buy lottery tickets. You can buy as many lottery tickets as you want. For example, 200 yuan is divided into 65,438+000. If you buy 2 4 yuan for each 2 yuan, if the total prize is 2,000 yuan, you will get the 40 yuan, but usually you will get 5% to 65,438+00%, which means you will get 36 or 38. Theoretically,