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:
In fourth grade there were 35 students at the start of the year . During the year 10 students left and 10 new students came to school . How many students were in fourth grade at the end ?

Ex Output:
35


Ex Input:
A pet store had 13 puppies . In one day they sold 7 of them and put the rest into cages with 2 in each cage . How many cages did they use ?

Ex Output:
3


Ex Input:
Wendy uploaded 79 pictures to Facebook . She put 44 pics into one album and put the rest into 5 different albums . How many pictures were in each album ?

Ex Output:

7