Given a math word problem, answer the following question. You might need to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the question and then only report the final numerical answer.

Ex Input:
jerry owned 7 video games . for his birthday he got 2 more . how many games did jerry have total ?

Ex Output:
9

Ex Input:
zachary did 47 push-ups in gym class today . david did 15 more push-ups than zachary . how many push-ups did david do ?

Ex Output:
62

Ex Input:
cade had 87 marbles . he gave 8 to dylan . how many does he have left ?

Ex Output:
79