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.

Ex Input:
Context: 3 birds were sitting on the fence. 2 more birds and 6 more storks came to join them.

Question: How many more storks than birds are sitting on the fence?

Ex Output:
1

Ex Input:
Context: Danny collects bottle caps and wrappers. He found 11 bottle caps and 28 wrappers at the park. Now he has 68 bottle caps and 51 wrappers in his collection.

Question: How many more wrappers than bottle caps did danny find at the park?

Ex Output:
17

Ex Input:
Context: Mary is baking a cake. The recipe calls for 9 cups of sugar 7 cups of flour and 4 cups of salt. She already put in 2 cups of flour.

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

Ex Output:
1