system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do countries like the US and U.K. know how much money to print each year?
gpt
Have you ever seen the movie Mad Money? Basically, Fed regulates it. Banks around the country send them something called "Mutilated" money. These are the dollar bills that should never see the light of day again. They are just replaced with newer bills and destroyed.