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: Nell collects cards. She had 246 baseball cards and 214 Ace cards. She gave some of her cards to Jeff and now has 404 baseball cards and 495 Ace cards left. 

 Question: How many more Ace cards than baseball cards does Nell have?

Ex Output:
91


Ex Input:
Context: There are 8 different movies and 21 different books in the ' crazy silly school ' series. If you read 7 of the books and watched 4 of the movies 

 Question: How many more movies do you still have to watch?

Ex Output:
4


Ex Input:
Context: Randy has 79 blocks. He uses 14 blocks to build a tower and 11 blocks to build a house. 

 Question: How many blocks are left?

Ex Output:

54