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

[Q]: At Billy 's Restaurant a group with 2 adults and 5 children came in to eat . If each meal cost 3 dollars , how much was the bill ?
[A]: 21

[Q]: Tim 's cat had kittens . He gave 3 to Jessica and 6 to Sara . He now has 9 kittens . How many kittens did he have to start with ?
[A]: 18

[Q]: There are 41 short trees and 44 tall trees currently in the park . Park workers will plant 57 short trees today . How many short trees will the park have when the workers are finished ?
[A]:
98