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: Zachary did 51 push-ups and David did 44 push-ups in gym class today.

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

Ex Output:
7

Ex Input:
Context: At the arcade Dave had won 18 tickets. If he used 5 to buy some toys and 11 more to buy some clothes

Question: How many tickets did Dave have left?

Ex Output:
2

Ex Input:
Context: The Razorback shop makes $ 192 dollars off each t-shirt and $ 34 off each jersey. During the Arkansas and Texas tech game they sold 157 t-shirts and 19 jerseys.

Question: How much more does a t-shirt cost than a jersey?

Ex Output:
158