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:
Tiffany baked 8 brownies , but needed 17 total for her party . If she used 8 cups of flour on each one , how much cups of flour does she still need ?

Ex Output:
72


Ex Input:
At the fair there were 10 people in line for the bumper cars . If 2 of them got tired of waiting and left and 2 more got in line , how many people would be in line ?

Ex Output:
10


Ex Input:
Nancy had 80 files on her computer . She deleted 31 of them and put the rest into folders with 7 files in each one . How many folders did Nancy end up with ?

Ex Output:

7