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: 46 campers went rowing on a day. 43 campers went rowing in the morning and some more campers went rowing in the afternoon.

Question: How many campers went rowing in the afternoon?
3

Context: Danny collects bottle caps. He found 30 bottle caps at the park while he threw away 63 old ones. Now he has 42 bottle caps in his collection.

Question: How many more bottle caps did danny throw away than those he found at the park?
33

Context: Last week Fred had 111 dollars and Jason had 40 dollars. Fred washed cars over the weekend and now has 115 dollars. Jason delivered newspapers and now has 44 dollars.

Question: How much money did they earn by washing cars?
4