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]: a furniture store had 15 chairs . after selling some there was 3 left . how many chairs did they sell ?
[EX A]: 12

[EX Q]: there are 64 pigs in the barn . some more come to join them . now there are 86 pigs . how many pigs came to join them ?
[EX A]: 22

[EX Q]: before his friends gave him more stamps simon initially had 34 stamps . if he now has 61 stamps how many stamps did he receive from his friends ?
[EX A]:
27

