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 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?

A: 1
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Q: Context: Josh had 9 marbles in his collection. He lost some marbles. If he has 4 marbles now 

 Question: How many marbles did he lose?

A: 5
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Q: Context: Mary is baking a cake. The recipe calls for 12 cups of flour 14 cups of sugar and 7 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?

A:
3
****