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

[EX Q]: marco and his dad went strawberry picking . together their strawberries weighed 23 pounds . marco 's strawberries weighed 14 pounds . how much did his dad 's strawberries weigh ?
[EX A]: 9

[EX Q]: andrew is having his friends over for game night . so he decided to prepare the snacks and the games . he started by making mini sandwiches . if he has 4 friends coming over and he made 3 sandwiches for each one of them how many sandwiches did he make in total ?
[EX A]: 12

[EX Q]: billy had 74 cherries . he ate 72 of them . how many cherries does billy have left ?
[EX A]:
2