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: They decided to hold the party in their backyard. They have 10 sets of tables and each set has 6 chairs. If there are 11 people sitting on chairs 

 Question: How many chairs are left unoccupied?

A: 49
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Q: Context: He then went to see the oranges being harvested. He found out that they harvest 5 sacks of ripe oranges and 74 sacks of unripe oranges per day. 

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

A: 69
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Q: 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?

A:
2
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