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.

Example Input: At Mrs. Hilt 's house , there was 29 inches of snow , and Brecknock Elementary School received 17 inches of snow . How much more snow did Mrs. Hilt 's house have ?
Example Output: 12

Example Input: At the fair there were 10 people in line for the bumper cars . If 2 of them got tired of waiting and left and 2 more got in line , how many people would be in line ?
Example Output: 10

Example Input: Larry has 67 cards . Dennis takes 9 away . How many cards will Larry have ?
Example Output:
58