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: Benny found 66 seashells and 49 starfish on the beach . He gave 52 of the seashells to Jason . How many seashells does Benny now have ?
Example Output: 14

Example Input: Sally had 27 Pokemon cards . Dan gave her 41 new Pokemon cards . Sally bought 20 Pokemon cards . How many Pokemon cards does Sally have now ?
Example Output: 88

Example Input: In fourth grade there were 8 students at the start of the year . During the year 5 students left and 8 new students came to school . How many students were in fourth grade at the end ?
Example Output:
11