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: Paul got a box of 601 crayons and 406 erasers for his birthday. At the end of the school year he only had 336 crayons left while not having lost a single eraser. 

 Question: How many more erasers than crayons did he have left?

SOLUTION: 70

PROBLEM: Context: Paul had 95 pens and 153 books. After selling some books and pens in a garage sale he had 13 books and 23 pens left. 

 Question: How many books did he sell in the garage sale?

SOLUTION: 140

PROBLEM: Context: After a typhoon, 2 trees in Haley's backyard died. If she had grown 12 trees initially 

 Question: How many trees does she have left?

SOLUTION:
10