You are given a math word problem and you are supposed to apply a single mathematical operator like addition, subtraction, multiplication, or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Example Input: victor had $ 10 . for his allowance he got another $ 8 . how much money does he have total ?
Example Output: 18

Example Input: the exit door leads to a river 487 inches across if the bridge he needs to cross is only 295 inches how much longer does he need to build if he wants to cross the river using the bridge ?
Example Output: 192

Example Input: if 1 round costs $ 80 how many rounds of golf can you play with $ 400 ?
Example Output:
5