I had an uncle who used to "carry money" for numbers rackets in NY which I think means he was involved in racketeering. I don't claim to understand how it work

I had an uncle who used to "carry money" for numbers rackets in NY which I think means he was involved in racketeering. I don't claim to understand how it worked, but I know the winning numbers were related to the winners of certain horse races. The state lottery pretty much put an end to it.