Taxi fare calculation

3KM within 8 yuan
More than 3KM per km 1.2 yuan
More than 5KM per km 1.5 yuan
Calculate the fare according to the distance from the car

static void Main (string[] args)
{
while (true)
{
Double I,L, m1 = 8,m2=1.2,m3=1.5,m4=2.4;
Console.Write ("Please enter the distance by car:");
i = convert.todouble (Console.ReadLine ());
if (i>0&&i<=3)
{
Console.WriteLine ("Your Driving costs are:" +M1);
}
else if (i>3&&i<=5)
{
L = m1 + (i-3) * m2;
Console.WriteLine ("Your Driving costs are:" + L);
}
else if (i>5)
{
L = m1 + m4 + (i-5) * m3;
Console.WriteLine ("Your Driving costs are:" + L);
}
Else
{
Console.WriteLine ("Your input is wrong!") ");
}
}

}

Taxi fare calculation