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?
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.
#### 999,000