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: There were 15 roses in the vase. Jessica threw away 33 roses from the vase and cut some more new roses from her flower garden to put in the vase. There are now 17 roses in the vase. 

 Question: How many more roses did she cut than those she threw away?
answer:
2


question:
Context: Bobby had 19 pieces of candy. He ate 2 pieces of candy. 

 Question: How many pieces of candy does he still have left?
answer:
17


question:
Context: Kelly has 22 nintendo games. 

 Question: How many does she need to buy so that she will have 140 games left?
answer:

118