a bill of 10 euro gives probably a 10 and a 5 if you're smart, so 2 bills
a 20 gives 10 (+5) and a 5, so 4 bills
a 50 gives 20 (10 (5) 5) twice and a 5, so 10 bills
and a hundert gives 20 bills.
10/2=5
20/4=5
50/10=5
100/20=5
Probably this bill system is founded by a EBT-er because of this regularity


