Human! BT21 X Reader

For a math project

I know I don't really update here, but hi.

I kind of have something for math that I need help with completing.

I have to ask 2 questions for it, so I'm asking here:

1. How many hours do you practice something? (it can be anything)
2. How many times are you most likely to make a mistake when practicing?

I would put up Animal Crossing videos, but I would have to put mine on youtube to be able to put up my own videos here.