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: The cave is 1218 feet deep and they are already at 849 feet. If they are travelling at speed of 17 

 Question: How much farther until they reach the end of the cave?

Ex Output:
369


Ex Input:
Context: Mary is baking a cake. The recipe calls for 12 cups of sugar and 14 cups of flour. She already put in 10 cups of sugar. 

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

Ex Output:
12


Ex Input:
Context: After resting they decided to go for a swim. If the depth of the water is 10 times Dean's height and he stands at 9 feet 

 Question: How much deeper is the water than Dean's height?

Ex Output:

81