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: Allan brought 6 balloons and Jake brought 3 balloons to the park. Jake then bought 4 more balloons at the park. 

 Question: How many more balloons did Jake have than Allan in the park?

A: 1
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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?

A: 69
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Q: Context: Jack received 9 emails in the morning, 10 emails in the afternoon and 7 emails in the evening. 

 Question: How many more emails did Jack receive in the morning than in the evening?

A:
2
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