There are 12/4 = <<12/4=3>>3 four month groups in a year

Jack drives 37,000*3 = <<37000*3=111000>>111,000 miles in a year.

Jack has driven 111,000*9 = <<111000*9=999000>>999,000 miles since he has started driving.

# Answer

999,000
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Jack has been driving for the past 9 years. He drives 37,000 miles every four months. How many miles has Jack driven since he started driving?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
999,000
Jack has been driving for the past 9 years. He drives 37,000 miles every four months. How many miles has Jack driven since he started driving?
train