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.

Ex Input:
Marilyn has 40 bananas that must be put away in boxes . Daniel comes to help and brings 10 cookies to share with Marilyn . If there are 8 boxes , how many bananas must go in each box ?

Ex Output:
5


Ex Input:
A restaurant made 9 hamburgers to serve during lunch . Only 3 were actually served . How many hamburgers were over from lunch ?

Ex Output:
6


Ex 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 ?

Ex Output:

180