Algebra II question, I've tried everything above and beyond unit conversions and I cannot figure this out. If someone would explain to me how to do this problem I would be very greatful. The lesson this homework is based off of is based on Direct / Inverse variations.

You are going to drive 480 miles today at an average speed of 60 miles per hour. Thus you are going to drive for a total of (8) hours. The diameter of the wheels on your car (including tires) is 25 inches. Thus each wheel is going to turn a total of _______ times today.