You are given a math word problem and you are supposed to apply multiple mathematical operators 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: At the arcade , Tom won 32 tickets playing ' whack a mole ' and 25 tickets playing ' skee ball ' . If he spent 7 of his tickets on a hat , how many tickets does Tom have left ?
Example Output: 50

Example Input: Roger had 68 dollars . If he spent 47 bucks on a new game , how many 7 dollar toys could he buy with the money he had left ?
Example Output: 3

Example Input: A pet store had 19 siamese cats and 45 house cats . During a sale they sold 56 cats . How many cats do they have left ?
Example Output:
8