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:
Craig starts with 5 Skittles . 2 are eaten by a hippopotamus . How many Skittles does Craig end with ?

Ex Output:
3


Ex Input:
If Benjamin strolled 14 miles at 2 miles per hour , how long was Benjamin travelling ?

Ex Output:
7


Ex Input:
Mrs. Hilt measured the distance from her desk to the water fountain . It was 30 feet . How many feet will Mrs. Hilt walk on her trips to the fountain if she goes to the water fountain 4 times today ?

Ex Output:

120