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. Hilt bought 2 pizzas . Each pizza had 8 slices . How many total slices of pizza did she have ?
Example Output: 16

Example Input: There are 77 apples in a box . Louise has 9 apples in a bag . Scott takes 75 apples out of the box . How many apples are left in the box ?
Example Output: 2

Example Input: Last year at Newberg 's airport , 14507 passengers landed on time . Unfortunately , 213 passengers landed late . In all , how many passengers landed in Newberg last year ?
Example Output:
14720