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: 2 beavers were working on their home . 1 went for a swim . How many beavers are still working on their home ?
Example Output: 1

Example Input: Adam had 5 dollars . At the store he spent $ 2 on a new game . If he got another 5 dollars for his allowance , how much money does he have now ?
Example Output: 8

Example Input: Lucy has an aquarium with 212 fish . She wants to buy 68 more fish . How many fish would Lucy have then ?
Example Output:
280