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: Kelly has 46 nintendo games and 132 sony games. 

 Question: How many sony games does she need to give away so that she will have 31 sony games left?

Ex Output:
101


Ex Input:
Context: 2 birds were sitting on the fence. 5 more birds and 4 more storks came to join them. 

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

Ex Output:
3


Ex Input:
Context: Dave had 19 apps and 18 files on his phone. After deleting some apps and files he had 6 apps and 15 files left. 

 Question: How many more files than apps does he have left on the phone?

Ex Output:

9