You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Ex Input:
A group of science students went on a field trip . They took 6 vans and 8 buses . There were 6 people in each van and 18 people in each bus . How many people went on the field trip ?

Ex Output:
180


Ex Input:
Will was organizing his baseball cards in a binder with 3 on each page . If he had 8 new cards and 10 old cards to put in the binder , how many pages would he use ?

Ex Output:
6


Ex Input:
Tiffany uploaded 7 pictures from her phone and 13 from her camera to facebook . If she sorted the pics into 5 different albums with the same amount of pics in each album , how many pictures were in each of the albums ?

Ex Output:

4