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: Jerry had 2 action figures and 10 books on a shelf in his room. Later he added 4 more action figures to the shelf. 

 Question: How many more books than action figures were on his shelf?

A: 4
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Q: Context: Rachel had to complete 3 pages of math homework and 4 pages of reading homework. 

 Question: How many more pages of reading homework than math homework did she have?

A: 1
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Q: Context: Next on his checklist is wax to stick the feathers together. He needs 159 g of wax more. If the feathers require a total of 628 g of wax 

 Question: How many grams of wax does he already have?

A:
469
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