BTC sell estimator, C#

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using System;
	
namespace Rextester
{    
    public class Program
    {
        
        // play with these numbers:
        private static float btc = 1.0f; // your starting BTC amount
        private static float sellInterval = 1000f; // how often you want to sell as price increases
        private static float startPrice = 8000f; // starting price
        private static float goalPrice = 25000f; // price you want to be able to sell until
        private static float checkInterval = 10f; // make this higher or lower if you want to be finer/coarser
        
        
        private static float tolerance = 0.0001f; // probably don't play with this one
        private static float valueEachSell = 10; // probably don't play with this one

public static void Main(string[] args)
        {
            float leftOver = 0f;
            do {
                leftOver = Calculate(btc);
                if (leftOver > tolerance) {
                    valueEachSell += checkInterval;
                }
            } while (leftOver > tolerance);

float totalCashSold = valueEachSell * ((goalPrice - startPrice) / sellInterval);
            float startAcctValue = btc * startPrice;
            float profit = ((totalCashSold / startAcctValue) - 1f) * 100f;

Console.WriteLine(output1);
            Console.WriteLine(output1b);
            Console.WriteLine(output2);
            Console.WriteLine(output3);
            Console.WriteLine(output4);
        }

private static float Calculate(float startBtc) {
            for (float start = startPrice + sellInterval; start <= goalPrice; start += sellInterval) {
                float btcSold = valueEachSell / start;
                startBtc -= btcSold;
            }
            return startBtc;
        }
    }
}

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