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:
While shopping , Maria bought 35 green towels and 21 white towels . If she gave her mother 34 of them , how many towels did Maria end up with ?

Ex Output:
22


Ex Input:
Rachel bought two coloring books . One had 23 pictures and the other had 32 . After one week she had already colored 44 of the pictures . How many pictures does she still have to color ?

Ex Output:
11


Ex Input:
Justin needs 61 paper plates for a birthday party . He already has 26 blue plates and 7 red plates . How many more plates should Justin buy ?

Ex Output:

28