Those values are just the total amount of that currency in the drawer.
So, for pennies there is one dollar and one cent worth of pennies in the drawer (or one-hundred-and-one pennies, e.g. .01 * 101 = 1.01).
For, twenties there is 60 dollars worth of twenties in the drawer (or three twenties, e.g. 20 * 3 = 60).
Etc.
["PENNY", 1.01] means you’ve coins of penny values summed to total of 1 dollar and 1 penny.
I had to google those terms(DIME, NICKEL) to find the values…
This means you’ve 3 notes of value $20 summed to $60
Hope it’s clear
I remember the currency throwing me off a bit as well when I first saw this challenge.
I guess most values in the real world have some units attached to them and units can often be confusing, especially because the same units are not used universally.