using System;

using System.Numerics;

​

public class Program

{

    public static (decimal multiplier, int exponent) Decompose(string value)

    {

        var split = value.Split('e');

        return (decimal.Parse(split[0]), int.Parse(split[1]));

    }

​

    public static int GetDecimalPlaces(decimal value)

        => BitConverter.GetBytes(decimal.GetBits(value)[3])[2];

    public static BigInteger ParseExtended(string value)

    {

        var(multiplier, exponent) = Decompose(value);

        var decimalPlaces = GetDecimalPlaces(multiplier);

        var power = (int)Math.Pow(10, decimalPlaces);

        return (BigInteger.Pow(10, exponent) * (int)(multiplier * power)) / power;

    }

​

    public static void Main(string[] args)

    {

        Console.WriteLine(ParseExtended("2.36e6007").ToString("0.00e0000"));

    }

}