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 Q]: Context: Jerry had 7 action figures and 2 books on a shelf in his room. Later he added 4 more books to the shelf. 

 Question: How many more action figures than books were on his shelf?
[EX A]: 1

[EX Q]: Context: Zachary did 51 push-ups in gym class today. David did 22 more push-ups than Zachary. John did 4 push-ups less than David. 

 Question: How many push-ups did John do?
[EX A]: 69

[EX Q]: Context: They decided to hold the party in their backyard. They have 14 chairs for each set of table. If they have 9 sets of tables 

 Question: How many more chairs than tables do they have?
[EX A]:
117