import java.util.*;

class Drive

{

    public static double DrivingCost(double drivenMiles, double milesPerGallon, double dollarsPerGallon)

    {

        // calculate gallons of ful used

        double gallons = drivenMiles / milesPerGallon;



        // calculate the cost

        double dollar = gallons * dollarsPerGallon;



        return dollar;

    }



    public static void main(String[] args)

    {

        // create a Scanner object

        Scanner sc = new Scanner(System.in);



        System.out.print("Enter the car\'s miles/gallon : ");



        // get user input

        double milesPerGallon = sc.nextDouble();



        System.out.print("Enter the car\'s gas dollars/gallon : ");



        // get user input

        double dollarsPerGallon = sc.nextDouble();



        System.out.println("Cost for 10 miles : $" + DrivingCost(10 , milesPerGallon , dollarsPerGallon));

        System.out.println("Cost for 50 miles : $" + DrivingCost(50 , milesPerGallon , dollarsPerGallon));

        System.out.println("Cost for 400 miles : $" + DrivingCost(400 , milesPerGallon , dollarsPerGallon));

    }

}

Sample Output
https://media.cheggcdn.com/media%2Fd20%2Fd20e4f7d-d491-470d-9be0-bbad8b8ced8f%2Fphp8H4GPT.png