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: Ned had to wash 9 short sleeve shirts and 21 long sleeve shirts before school . If he had only washed 29 of them by the time school started , how many did he not wash ?
Example Output: 1

Example Input: Cody had 45 dollars . For his birthday he got 9 more dollars but spent 19 on a new game . How much money does he have now ?
Example Output: 35

Example Input: A group of 4 friends went into a restaurant . The chef already had 9 chicken wings cooked but cooked 7 more for the group . If they each got the same amount how many would each person get ?
Example Output:
4