Elijiah spent $6.20 for lunch everyday for 5 school days. He had $50 in his account. How much money

Elijiah spent $6.20 for lunch everyday for 5 school days. He had $50 in his account. How much money was left over in his account?

Elijiah starts with $50
He spends $6.20 per day * 5 days = 31

Leftover = 50 - 31
Leftover = 19