there are no odds about it . . . it is purely a mathematical formula . . . every answer you get is a factor of 9, the only answers you can get are 9, 18, 27, 36, 45, 54, 63, 72, 81, 90 and 99 . . . if you look at the symbols for these numbers, they are exactly the same and that's why the symbol will always be correct if you do the formula . . . god, that's why i'm such a good moderator . . .