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: There are 97 erasers in a box . Ernest has 17 erasers in a bag . Mark takes 97 erasers out of the box . How many erasers are left in the box ?
Example Output: 0

Example Input: Chloe was playing a video game where she scores 9 points for each treasure she finds . If she found 6 treasures on the first level and 3 on the second , what would her score be ?
Example Output:
81