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

Ex Input:
Context: Paco had 17 cookies. He ate 14 cookies and gave 13 of them to his friend. 

 Question: How many more cookies did he eat than those he gave to his friend?

Ex Output:
1


Ex Input:
Context: A grocery store had a total of 17 bottles of which 9 were bottles of regular soda and the rest were bottles of diet soda. They also had 29 apple. 

 Question: How many bottles of diet soda did they have?

Ex Output:
8


Ex Input:
Context: Bobby had 22 pieces of candy. He ate some pieces of candy. Then he ate 5 more. If he still has 8 pieces of candy left 

 Question: How many pieces of candy had he eaten at the start?

Ex Output:

9