6.66 but you see the "." That identifys the symbol of a decimal which is a 2dp (decimal point) so it's really .66 so really with the 6 is really a whole number, unlike the .66 however this is just a decimal so it's come to my conclusion 6.66 really is just the number 6 just with .66 added because 666 however is the cursed digits not 6.66