Ninety-nines is equal to \(9 \lfloor 10^{90} / 9floor = 10^{90} - 1\), or 90 copies of 9: 999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999 or metamathematically with interior superscription as \(9^{88}9\) It is exactly googol/billion - 1.