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: Mrs. Hilt baked pies last weekend for a holiday dinner . She baked 16 pecan pies and 14 apples pies . If she wants to arrange all of the pies in rows of 5 pies each , how many rows will she have ?
Example Output: 6

Example Input: Keith grew 29 cantelopes , Fred grew 16 cantelopes , and Jason grew 20 cantelopes . How many cantelopes did they grow in total ?
Example Output: 65

Example Input: You have 7 balloons and your friend has 5 balloons . How many more balloons do you have than your friend ?
Example Output:
2