using System;

public class Program

{

    const decimal ORIGINAL_KWH_CAPACITY = 21;

    public static void Main()

    {   

        for (int capacityBarsOnCarDisplay = 12; capacityBarsOnCarDisplay > 0; capacityBarsOnCarDisplay--) {

            var availableKwhCapacity = GetAvailableKwhCapacity(capacityBarsOnCarDisplay);   

            Console.WriteLine("Available Capacity " + availableKwhCapacity.ToString());

        }

    }

    private static decimal GetAvailableKwhCapacity(int capacityBarsOnCarDisplay) {

        decimal percentOfBatteryAvailable = 0;  

        switch(capacityBarsOnCarDisplay)

        {

            case 12:

                percentOfBatteryAvailable = ((100m + 91.5m) / 2m) / 100m;           

                break;

        }

        var availableKwhCapacity = ORIGINAL_KWH_CAPACITY * percentOfBatteryAvailable;

        return availableKwhCapacity;

    }

}