You will be given a definition of a task first, then some input of the task.
The task is to generate the correct answer for a given math problem.

Problem: a certain car can travel 32 kilometers on a liter of fuel . if the fuel tank ' s contents decrease by 3.9 gallons over a period of 5.7 hours as the car moves at a constant speed , how fast is the car moving , in miles per hour ? ( 1 gallon = 3.8 liters ; 1 mile = 1.6 kilometers )
Output:
52