TASK DEFINITION: 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.
PROBLEM: Context: Nell collects cards. She had 239 baseball cards and 38 Ace cards. She gave some of her cards to Jeff and now has 376 Ace cards and 111 baseball cards left. 

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

SOLUTION: 265

PROBLEM: Context: At the arcade Dave had won 14 tickets and lost 2 tickets. If he used 10 to buy some toys 

 Question: How many tickets did Dave have left?

SOLUTION: 2

PROBLEM: Context: Winter is almost here and most animals are migrating to warmer countries. There are 8 bird families living near the mountain. If 42 bird families flew away to africa and 31 bird families flew away to asia 

 Question: How many more bird families flew away to africa than those that flew away to asia?

SOLUTION:
11