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.

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

John needs $ 2.5 . He has $ 0.75 . How much more money does he need ?
1.75

Carolyn starts with 47 marbles and 6 oranges . She shares 42 with Diana . How many marbles does Carolyn end with ?

5