A shop sells 1 chocolate at $1. you can exchange 3 wrappers for 1 chocolate. if u have 15, how many

15/3= 5
I have 15 wrappers,
For every 3 wrapper I get one chocolate,
So 15 wrappers/3 wrappers to get a chocolate
Then you get 5 chocolate in total.
But I guess you knew that yourself, I mean come on...