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[latex]\frac{(-3)^{2}* 15^{3}*(-25) }{ 5^{4}* 3^{6}} = \frac{9* 15^{3}*(-25) }{ 5^{4}* 3^{6}} = \frac{ 3^{2}* 15^{3}*(-5^{2})}{ 5^{4}* 3^{6}} = -\frac{ 3^{2}* 5^{3}*3^{3}*5^{2} }{ 5^{4}* 3^{6}} = -\frac{ 3^{5}* 5^{5} }{ 5^{4}* 3^{6}} =[/latex][latex]- \frac{5}{3} = -1 \frac{2}{3} [/latex]