Q: 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.
Context: Last week Fred had 78 dollars and Jason had 31 dollars. Jason delivered newspapers and now has 57 dollars. Fred washed cars over the weekend and now has 90 dollars.

Question: How much money did Jason earn by delivering newspapers?
A:
26