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: Mary is baking a cake. The recipe calls for 11 cups of sugar 6 cups of flour and 9 cups of salt. She already put in 12 cups of flour. 

 Question: How many more cups of sugar than cups of salt does she need to add now?

A: 2
****
Q: Context: Rachel had to complete 5 pages of math homework and yet more pages of reading homework. If she had to complete a total of 7 pages of homework 

 Question: How many pages of reading homework did she have to complete?

A: 2
****
Q: Context: Winter is almost here and most animals are migrating to warmer countries. There are 41 bird families living near the mountain. If 35 bird families flew away to asia and 62 bird families flew away to africa 

 Question: How many more bird families flew away to africa than those that flew away to asia?

A:
27
****