instruction:
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.
question:
Context: Paul got a box of 521 crayons and 66 erasers for his birthday. At the end of the school year he only had 154 left while not having lost a single erasers. 

 Question: How many crayons had been lost or given away?
answer:
367


question:
Context: Bobby ate 38 pieces of candy. Then he ate 36 more. He also ate 16 pieces of chocolate. 

 Question: How many more pieces of candy than chocolate did Bobby eat?
answer:
58


question:
Context: During summer break 819058 kids from Lawrence county go to camp and the other 668278 kids stay home. 

 Question: How many more kids spent their summer break at the camp compared to those who stayed home?
answer:

150780