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: Shelby ’ s teacher gives out gold stars for great math work . Yesterday , Shelby earned 4 gold stars . Today , she earned 3 more . How many gold stars did Shelby earn in all ?

Output: 7


Input: Consider Input: At Billy 's Restaurant a group with 2 adults and 5 children came in to eat . If each meal cost 3 dollars , how much was the bill ?

Output: 21


Input: Consider Input: Tom was putting his spare change into piles . He had 2 piles of quarters and 4 piles of dimes . If each pile had 5 coins in it , how many coins did he have total ?


Output: 30