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.

You have collected 7 crickets . How many more crickets do you need to collect to have 11 crickets ?
4

Harry Hound had a terrible earache yesterday . When I peered into his ears yesterday , I found 36 frisky fleas having a party in his right ear and 85 baby fleas sleeping peacefully in his left ear . I cleaned out Harry Hound 's ears . How many fleas perished ?
121

Adam had 5 dollars . At the store he spent $ 2 on a new game . If he got another 5 dollars for his allowance , how much money does he have now ?

8