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:
Sally bought 4 dozen eggs from the grocery store to bake some cakes . How many eggs did Sally buy ?

Ex Output:
48


Ex Input:
John earned 8 dollars for each lawn he mowed . If he had 15 lawns to mow , but forgot to mow 7 of them , how much money did he actually earn ?

Ex Output:
64


Ex Input:
There were 150 book shelves . Each book shelf had 15 books . How many books were on the shelves ?

Ex Output:

2250