$$388/9999999999999999999999999$$
$\frac{388}{9999999999999999999999999}\approx 3.88 \cdot 10^{-23}$
$\frac{2 ^ {2} \cdot 97}{3 ^ {2} \cdot 41 \cdot 271 \cdot 21401 \cdot 25601 \cdot 182521213001} = 3.88 \times 10^{-23}$
