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: David did 27 more push-ups but 7 less crunches than Zachary in gym class today. If Zachary did 5 push-ups and 17 crunches 

 Question: How many more crunches than push-ups did Zachary do?

Ex Output:
12


Ex Input:
Context: Kelly has 80 nintendo games. She found 31 more nintendo games. 

 Question: How many does she need to give away so that she will have 6 games left?

Ex Output:
105


Ex Input:
Context: Tiffany was collecting cans for recycling. On monday she had 4 bags of cans. The next day she found some more bags worth of cans. If she had a total of 6 bags altogether 

 Question: How many bags did she find on the next day?

Ex Output:

2