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:
Dave bought 12 boxes of chocolate candy and gave 5 to his little brother . If each box has 3 pieces inside it , how many pieces did Dave still have ?

Ex Output:
21


Ex Input:
A waiter had 9 tables he was waiting on , with 4 women and 3 men at each table . How many customers total did the waiter have ?

Ex Output:
63


Ex Input:
A restaurant sold 63 hamburgers last week . How many hamburgers on average were sold each day ?

Ex Output:

9