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: Lizette has 813 stamps . Lizette has 125 more stamps than Minerva . How many stamps does Minerva have ?
Example Output: 688

Example Input: There are 41 pencils in the drawer . Mike placed 30 pencils in the drawer . How many pencils are now there in total ?
Example Output: 71

Example Input: She counted her crayons and found out that she has 80 crayons which she will place in crayon boxes . Every box can contain 8 crayons . How many boxes does she need ?
Example Output:
10