Evaluate `log((8xx4 sqrt5)/81)`

Explanation

To evaluate the logarithm \( \log\left(\frac{8 \times 4 \sqrt{5}}{81}\right) \), we will follow these steps:

### Step 1: Rewrite the numbers in terms of their prime factors

We can express the numbers in the logarithm in terms of their prime factors:
- \( 8 = 2^3 \)
- \( 4 = 2^2 \)
- \( \sqrt{5} = 5^{1/2} \)
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