[latex]frac{ ot81^3}{ ot100^{25}} cdot frac{ ot4^1}{ ot27^1}=frac{3}{25}[/latex] [latex]frac{ ot24^8}{ ot50^{10}} cdot frac{ ot5^1}{ ot27^9}=frac{8}{90}=frac{4}{45}[/latex]

1 [latex] frac{81}{100} * frac{4}{27} = frac{81}{25} * frac{1}{27} = frac{9}{25} * frac{1}{3} = frac{3}{25}*1= frac{3}{25} [/latex] 2 [latex] frac{24}{50} * frac{5}{27} = frac{24}{10} * frac{1}{27} = frac{24}{270} = frac{4}{45} [/latex]