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

Example Input: Mrs. Sheridan has 11 cats . Mrs. Garrett has 24 cats . How many more cats does Mrs. Garrett have than Mrs. Sheridan ?
Example Output: 13

Example Input: Ellen went to a garage sale to buy chairs . Each chair cost 15 dollars . How much money did Ellen spend for the 12 chairs she bought ?
Example Output: 180

Example Input: Harry is inviting 3 friends to a party . He has 12 cookies . How many cookies will each friend get ?
Example Output:
4

