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: it takes 7 minutes to bake 1 pan of cookies . how long will it take to bake 4 pans of cookies ?
Example Output: 28

Example Input: gwen prepared 98 books to sell in the flea market . after the activity ended she had 96 books left . how many did she sell ?
Example Output: 2

Example Input: the first act included 5 clown mobiles each stuffed with 28 clowns . how many clowns are inside all the clown mobiles combined ?
Example Output:
140