Electrostatic and Gravitational Force Ratio

A positive ion $A$ and a negative ion $B$ has charges $6.67 \times 10^{-19} \mathrm{C}$ and $9.6 \times 10^{-10} \mathrm{C}$, and masses 19.2 $\times 10^{-27} \mathrm{kg}$ and $9 \times 10^{-27} \mathrm{kg}$ respectively. At an instant, the ions are separated by a certain distance $r$. At that instant the ratio of the magnitudes of electrostatic force to gravitational force is $P \times 10^{-23}$, where the value of $P$ is ______ (Take $\; \dfrac{1}{4 \pi \varepsilon_0} = 9 \times 10^9 \mathrm{Nm}^2 \mathrm{C}^{-1}$ and universal gravitational constant as $6.67 \times 10^{-11} \mathrm{Nm}^2 \mathrm{kg}^{-2}$ )