You are given a math word problem and you are supposed to apply multiple mathematical operators 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 Input:
John had 33 socks . If he threw away 19 old ones that did n't fit and bought 13 new ones , how many socks would he have ?

Ex Output:
27

Ex Input:
Mrs. Hilt bought a notebook for $ 1.3 . She paid with nickels . How many nickels did she use to buy the notebook ?

Ex Output:
26

Ex Input:
There are 64 students trying out for the school 's trivia teams . If 36 of them did n't get picked for the team and the rest were put into 4 groups , how many students would be in each group ?

Ex Output:
7