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.

[Q]: Context: Jake has 3 fewer peaches than Steven who has 8 more peaches than Jill. Steven has 5 peaches.

Question: How many more peaches does Jake have than Jill?
[A]: 5

[Q]: Context: Paul had 21 books. After selling some in a garage sale he bought 42 new ones. If he has 15 books now

Question: How many more books did he sell than he bought?
[A]: 6

[Q]: Context: Jerry had 4 action figures on a shelf in his room. Later he added some more action figures to the shelf. If there are a total of 8 action figures on his shelf now

Question: How many action figures did he add to the shelf?
[A]:
4