Create an algorithm, IPO Chart and a fow chart for the Gas Mileage Program.

When Sheila Jones began her trip from Vermont to Oregon, she filed her car's tank with gas and reset its trip meter to zero. After traveling $324$ miles. Sheila stopped at a gas station to refuel; the gas tank required $17$ ga$"$ons$.$ Sheila wants a program that calculates and displays her car's gas mileage at any time during the trip. The gas mileage is the number of miles her car can be driven per gallon of gas.