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:
Robin uploaded 35 pictures from her phone and 5 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:
8


Ex Input:
Debby 's class is going on a field trip to the zoo . If each van can hold 4 people and there are 2 students and 6 adults going , how many vans will they need ?

Ex Output:
2


Ex Input:
Paige had 43 math problems and 12 science problems for homework . If she finished 44 of the problems at school , how many problems did she have to do for homework ?

Ex Output:

11