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: Nancy found 35 seashells and 25 starfish on the beach . She gave 17 of the seashells to Jason . How many seashells does Nancy now have ?
Example Output: 18

Example Input: Dan has $ 3 . He bought a candy bar for $ 1 . How much money is left ?
Example Output: 2

Example Input: Sally picked 7 lemons and Mary picked 9 lemons from the lemon tree . How many lemons were picked in total ?
Example Output:
16