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: Sara picked 6 pears and Tim picked 5 pears from the pear tree . How many pears were picked in total ?
Example Output: 11

Example Input: Sally grew 6 carrots . Fred grew 4 carrots . How many carrots did they grow in all ?
Example Output: 10

Example Input: Paula 's aunt gave her $ 109 to spend on clothes at the mall . She bought 2 shirts that cost $ 11 each and a pair of pants that cost $ 13 . How much money does Paula have left to buy more clothes ?
Example Output:
74