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: 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?

A: 81
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Q: Context: Paco had 36 cookies. He gave 14 cookies to his friend and ate 10 cookies. 

 Question: How many cookies did Paco have left?

A: 12
****
Q: Context: He then went to see the oranges being harvested. He found out that they harvest 71 sacks of unripe oranges and 60 sacks of ripe oranges per day. 

 Question: How many more sacks of unripe oranges than ripe oranges are harvested per day?

A:
11
****