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.

Input: Consider Input: Context: Bobby ate 17 pieces of candy. Then he ate 15 more. If he initially had 36 pieces of candy 

 Question: How many pieces of candy does he still have left?

Output: 4


Input: Consider Input: Context: There are 8 different books and 5 different movies in the ' crazy silly school ' series. If you read 19 of the movies and watched 16 of the books 

 Question: How many more movies than books have you read?

Output: 3


Input: Consider Input: Context: 4 birds and 3 storks were sitting on the fence. 6 more storks came to join them. 

 Question: How many more storks than birds are sitting on the fence?


Output: 5