Consider the reaction $\mathrm{N}_{2}(\mathrm{~g})+3 \mathrm{H}_{2}(g) \rightleftharpoons 2 \mathrm{NH}_{3}(g)$ in a continuous flow reactor under steady-state conditions. The component flow rates at the reactor inlet are $F_{N_{2}}^{0}=100 \mathrm{~mol} \mathrm{~s}^{-1}, F_{H_{2}}^{0}=300 \mathrm{~mol} \mathrm{~s}^{-1}, F_{\text {inert }}^{0}=1 \mathrm{~mol} \mathrm{~s}^{-1}$. If the fractional conversion of $\mathrm{H}_{2}$ is 0.60 , the outlet flow rate of $\mathrm{N}_{2}$, in $\mathrm{mol} \mathrm{s}^{-1}$, rounded off to the nearest integer, is $\_\_\_\_\_\_\_$.