MsgBox Int(CLng(Mid(Me.Barkod, 2, 1)) + CLng(Mid(Me.Barkod, 4, 1)) + CLng(Mid(Me.Barkod, 6, 1)) + CLng(Mid(Me.Barkod, 8, 1)) + CLng(Mid(Me.Barkod, 10, 1)) + CLng(Mid(Me.Barkod, 12, 1))) * 3 + CLng(Mid(Me.Barkod, 1, 1)) + CLng(Mid(Me.Barkod, 3, 1)) + CLng(Mid(Me.Barkod, 5, 1)) + CLng(Mid(Me.Barkod, 7, 1)) + CLng(Mid(Me.Barkod, 9, 1)) + CLng(Mid(Me.Barkod, 11, 1))
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