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.

Roger was putting his spare change into piles . He had 3 piles of quarters and 3 piles of dimes . If each pile had 7 coins in it , how many coins did he have total ?
42

Dave had 10 video games but 2 of them were n't working . If he wanted to sell the working games for $ 4 each , how much money could he earn ?
32

Adam bought 2 boxes of chocolate candy and 5 boxes of caramel candy . If each box has 4 pieces inside it , how much candy did he have total ?
28