unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    Edit2: TEdit;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}
function encrypt(serial:string):string;
var
  i:dword;
  len:dword;
  r:dword;
begin
  r:=0;
  len:=length(result);
  for i:=1 to len do
  begin
    r:=r+strtoint(serial[i]);
    r:=r*10;
  end;
  result:=inttostr(r);
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  edit2.text:=encrypt(edit1.text);
end;

end.