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: Tiffany was collecting cans for recycling. On monday she had 4 bags of cans. The next day she found some more bags worth of cans. If she had a total of 6 bags altogether 

 Question: How many bags did she find on the next day?
2

Context: There are 10 different books and 11 different movies in the ' crazy silly school ' series. If you read 13 of the books and watched 12 of the movies 

 Question: How many more books than movies have you read?
1

Context: Last week Fred had 19 dollars and Jason had 16 dollars. They washed cars over the weekend and now Fred has 40 dollars and Jason has 69 dollars. 

 Question: How much money did Fred earn over the weekend?

21