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: Dave had 59 files and 15 apps on his phone. After deleting some apps and files he had 12 apps and 30 files left. 

 Question: How many apps did he delete?

A: 3
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Q: Context: Jerry had 7 action figures on a shelf in his room. Later he added some more action figures to the shelf and removed 10 of the old ones. If there are 8 action figures on his shelf now 

 Question: How many action figures did he add to the shelf?

A: 11
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Q: Context: Mary is baking a cake. The recipe calls for 5 cups of flour and 14 cups of sugar. She already put in 10 cups of flour and 2 cups of sugar. 

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

A:
12
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