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: There were 100 dollars in Olivia's wallet. She collected 148 more dollars from an atm. After she visited a supermarket there were 159 dollars left. 

 Question: How much did she spend?
89

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: Rachel's tree had 4 apples initially. She picked some apples and now there are 2 apples left on the tree. 

 Question: How many apples did rachel pick?

2