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

Input: Consider Input: Roger was putting his spare change into piles . He had 3 piles of quarters and 3 piles of dimes . If each pile had 7 coins in it , how many coins did he have total ?

Output: 42


Input: Consider Input: If Lawrence walked 4 kilometers at 3 kilometers per hour , how long was Lawrence walking ?

Output: 1


Input: Consider Input: Sam grew 4 watermelons , but the rabbits ate 3 watermelons . How many watermelons does Sam have ?


Output: 1