Multiplying logarithms of different bases

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How do you multiply the following logs... $$\log_5(n) * \log_2(n)$$

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Notice that $$\log_x(y) = \frac{\log y}{\log x}$$ therefore $$\log_5(n) \log_2(n) = \frac{(\log(n))^2}{\log 5\log 2} \approx \frac{(\log(n))^2}{1.1156}$$ This is a "simplification" if $\log n$ is easy to compute, or you need some certain manipulation. However, sometimes $\log_2(n)$ or $\log_5(n)$ are easy to compute.