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.

Example Input: 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?
Example Output: 12

Example Input: Context: Rachel picked 7 ripe apples from her tree. Now the tree has 5 apples still on it. If 3 of those are ripe and the rest are unripe 

 Question: How many unripe apples does the tree have now?
Example Output: 2

Example Input: Context: Because of the decision Sofia asked the students to suggest specific types of food. If 144 students suggested adding mashed potatoes 467 suggested adding bacon to the menu and 79 suggested adding tomatoes 

 Question: How many more students suggested mashed potatoes than those that suggested tomatoes?
Example Output:
65