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

Ex Input:
Each chocolate bar in a box cost $ 6 . If a box had 13 bars total and Zoe sold all but 6 bars , how much money would she have made ?

Ex Output:
42


Ex Input:
A lawyer bills her clients 200 dollars per hour of service . If a client 's case requires 39 hours to complete , use proportion to calculate how much the client will owe the lawyer in dollars .

Ex Output:
7800


Ex Input:
Jesse has 21 bananas . If he shares them among 3 friends , how many bananas does each friend get ?

Ex Output:

7