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: Bianca and her mom were picking carrots from their garden . Bianca picked 26 and her mother picked 15 . If only 16 of the carrots were good , how many bad carrots did they have ?
Example Output: 25

Example Input: At the fair there were 9 people in line for the bumper cars . If 6 of them got tired of waiting and left and 3 more got in line , how many people would be in line ?
Example Output: 6

Example Input: There are 2 bananas in a pile on the desk . Each banana comes in a package of 17 . 7 bananas are added to the pile . How many bananas are there in the pile ?
Example Output:
9