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:
Sara has 10 marbles . She loses 7 . How many marbles will Sara have ?

Ex Output:
3


Ex Input:
There are 5 scissors and 3 pencils in the drawer . Jason placed 4 scissors in the drawer . How many scissors are now there in total ?

Ex Output:
9


Ex Input:
George was working as a sacker at a grocery store where he made 5 dollars an hour . On Monday he worked 7 hours and on Tuesday he worked 2 hours . How much money did George make in those two days ?

Ex Output:

45