<human>:  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?
<bot>: How many four month groups are there in each year? ** There are 12/4 = <<12/4=3>>3 four month groups in a year
How many miles does Jack drive in a year? ** Jack drives 37,000*3 = <<37000*3=111000>>111,000 miles in a year.
How many miles has Jack driven since he started driving? ** Jack has driven 111,000*9 = <<111000*9=999000>>999,000 miles since he has started driving.
#### 999,000