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: 532 people are watching a movie in a theater . The theater has 750 seats . How many seats are empty in the theater ?
Example Output: 218

Example Input: At the fair there were 31 people in line for the bumper cars . If 25 of them got tired of waiting and left and 25 more got in line , how many people would be in line ?
Example Output: 31

Example Input: Eugene has 51 pencils . He gets 6 more from Joyce . How many pencils does Eugene have in all ?
Example Output:
57