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

Input: Consider Input: 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 ?

Output: 121


Input: Consider Input: Adam has $ 5 to buy an airplane that costs $ 4.28 . How much change will Adam get ?

Output: 0.72


Input: Consider Input: There are 25 popular trees currently in the park . Park workers will plant 73 more popular trees today . How many popular trees will the park have when the workers are finished ?


Output: 98