Conductance in the esu system is measured in statmhos, where $1 \text{ statmho} \approx 1.11265 \times 10^{-12} \text{ S}$. If a semiconductor thin film has a conductance of $1.8 \times 10^9 \text{ statmho}$, what is its conductance in millisiemens ($\text{mS}$)?