system
A chat on subreddit /r/wallstreetbets
human
So the same formula with figuring remaining balance on credit card interest. Get periodic rate, divide by days of yr, then times # of days borrowed.

gpt
Mate APY/APR is the same thing no matter where it is. It's per year. You have to figure out the daily/weekly/monthly/yearly gains/losses from it, formulas don't magically change