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: Mary is baking a cake. The recipe calls for 12 cups of flour 5 cups of sugar and 49 cups of salt. She already put in 11 cups of flour. 

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

Ex Output:
1


Ex Input:
Context: Rachel had to complete 3 pages of math homework and 4 pages of reading homework. 

 Question: How many more pages of reading homework than math homework did she have?

Ex Output:
1


Ex Input:
Context: Dan had $ 3 left with him after he bought a candy bar. If he had $ 4 at the start 

 Question: How much did the candy bar cost?

Ex Output:

1