using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        long t1 = 234567890;

        List<long> input = new List<long>();

        while(t1>0){

            input.Add(t1%10);

            t1 /=10;

        }

        input.Reverse();

        foreach(int b in input)

            Console.Write(b);

        Console.WriteLine("\n");

        Console.WriteLine(GetString(input));

    }

    public static string GetString(List<long> input){

        string abbr = "";

        int offset = 0;

        if(input.Count < 7)

            return String.Join("",input.Select(i=>i.ToString()));

        else if(input.Count < 10)

        {

            abbr = " Million";

            offset = 6;

        }

        else if(input.Count < 13)

        {

            abbr = " Billion";

            offset = 9;

        }

        else

            return "err";

        int index = input.Count - offset;

        string output = input[0].ToString() + input[2].ToString() + input[0].ToString() + input[3].ToString() + abbr;

        return output.Insert(index,".");

    }

}

​