You are given a math word problem and you are supposed to apply multiplication or division mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

At lunch a waiter had 9 customers and 5 of them did n't leave a tip . If he got $ 8 each from the ones who did tip , how much money did he earn ?
32

At Oliver 's Restaurant a group with 2 adults and 4 children came in to eat . If each meal cost 3 dollars , how much was the bill ?
18

At lunch a waiter had 10 customers and 5 of them did n't leave a tip . If he got $ 3 each from the ones who did tip , how much money did he earn ?

15

