static void Main(string[] args)
    {
		// ((x)+(y))/((t)-(v))+((z)-(x))/((k)+(c))
        StreamReader fileStream = new StreamReader(@"..\..\TextFile1.txt");
        Formula myFormula = new Formula(fileStream.ReadLine());
        Console.WriteLine("Bracket view: " + myFormula.ToString());
        myFormula.ToBraket_FreeView();
        Console.WriteLine("Bracket-free view: " + myFormula.ToString());
        Console.ReadKey();
    }