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 438 baseball cards and 18 Ace cards. She gave some of her cards to Jeff and now has 55 Ace cards and 178 baseball cards left.

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

SOLUTION: 123

PROBLEM: Context: Friends of Katie had 57 games and she had 63 ds games.

Question: How many more games does Katie have than her friends?

SOLUTION: 6

PROBLEM: Context: Some children were riding on the bus. At the bus stop 2 more children got on the bus. Then there were 41 children altogether on the bus.

Question: How many children were riding on the bus before the bus stop?

SOLUTION:
39