BTC sell estimator, C#

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using System;
	
namespace Rextester
{    
    public class Program
    {
        // buy section
        private static float lowestExpectedPrice = 8000; // inclusive
        //private static float buySellInterval ==> set in sell section
        private static float amountOfUsdAvailable = 1800;
        
        // play with these numbers:
        private static float btc = 0.45f; // your starting BTC amount
        private static float buySellInterval = 500; // how often you want to sell as price increases
        private static float startPrice = 10000; // starting price
        private static float goalPrice = 15000; // 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 buyAmountEachInterval = amountOfUsdAvailable/((startPrice-lowestExpectedPrice)/buySellInterval);
            Console.WriteLine(string.Format("Buy amount each interval: ${0:0} -- {1:0} intervals expected.", buyAmountEachInterval, ((startPrice-lowestExpectedPrice)/buySellInterval)));
            
            for(float start = startPrice-buySellInterval; start >= lowestExpectedPrice; start -= buySellInterval) {
                var btcToBuy = buyAmountEachInterval / start;
                Console.WriteLine(string.Format("At {0:$0} you should place an order for {1:0.00000} BTC.", start, btcToBuy));
            }
            
            Console.WriteLine("\n\n");
            
            float leftOver = 0f;
            do {
                leftOver = Calculate(btc);
                if (leftOver > tolerance) {
                    valueEachSell += checkInterval;
                }
            } while (leftOver > tolerance);

float totalCashSold = valueEachSell * ((goalPrice - startPrice) / buySellInterval);
            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 + buySellInterval; start <= goalPrice; start += buySellInterval) {
                float btcSold = valueEachSell / start;
                startBtc -= btcSold;
            }
            return startBtc;
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,12 sec, absolute running time: 0,09 sec, cpu time: 0,08 sec, average memory usage: 12 Mb, average nr of threads: 2, absolute service time: 0,27 sec