using System; public class Test { public static void Main() { var n = 614514908; var nLength = (int)Math.Floor(Math.Log10(n) + 1)/ 3; var nArray = new int[nLength]; for (int i = 0, numMod = n; i < nLength; numMod /= 1000, i++) nArray[i] = numMod%1000; for (var i = 0; i < nArray.Length; i++) Console.WriteLine(nArray[i]); } }