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:
Katie had 85 files on her computer . She deleted 40 of them and put the rest into folders with 5 files in each one . How many folders did Katie end up with ?

Ex Output:
9

Ex Input:
The school cafeteria ordered 37 red apples and 45 green apples for students lunches . But , if only 51 students wanted fruit , how many extra did the cafeteria end up with ?

Ex Output:
31

Ex Input:
When Joan was visited by the toothfairy , she received 14 each of quarters , half - dollars , and dimes . How much money did the toothfairy leave Joan ?

Ex Output:
11.9