(9g^3s^6)/(3gs^2)=3g^2s

To simplify the expression \frac{9}{3} = 3 g g^{3-1} = g^{2} s s^{6-2} = s^{4} \frac {9g^{3}s^{6}}{3gs^{2}} = 3g^{2}s^{4} 3g^{2}s^{4}$.