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: Matthew had 31 crackers. He has 23 crackers left after he gave equal numbers of crackers to his 5 friends.

Question: How many crackers did Matthew give to his friends?

Ex Output:
8

Ex Input:
Context: There were 15 roses in the vase. Jessica threw away 33 roses from the vase and cut some more new roses from her flower garden to put in the vase. There are now 17 roses in the vase.

Question: How many more roses did she cut than those she threw away?

Ex Output:
2

Ex Input:
Context: Baker made 13 cakes. He sold 91 of them and bought 154 new cakes.

Question: How many more cakes did baker buy than those he sold?

Ex Output:
63