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:
Lana was unboxing some of her old winter clothes . She found 3 boxes of clothing and inside each box there were 3 scarves and 4 mittens . How many pieces of winter clothing did Lana have total ?

Ex Output:
21


Ex Input:
If Teresa jogged 25 kilometers at 5 kilometers per hour , how long was Teresa jogging ?

Ex Output:
5


Ex Input:
The cost of 5 feet of chain is 2 dollars , what length of chain can be purchased with 7.5 dollars ?

Ex Output:

18.75