If $\mathrm{O}_{2}$ gas is bubbled through water at $303 \mathrm{~K}$, the number of millimoles of $\mathrm{O}_{2}$ gas that dissolve in 1 litre of water is __________. (Nearest Integer)

(Given : Henry's Law constant for $\mathrm{O}_{2}$ at $303 \mathrm{~K}$ is $46.82 \,\mathrm{k}$ bar and partial pressure of $\mathrm{O}_{2}=0.920$ bar)

(Assume solubility of $\mathrm{O}_{2}$ in water is too small, nearly negligible)