问题138: 5×(2^3)^3×5^2÷2^4

$$ \begin{aligned} & 5 \times\left(2^3\right)^3 \times 5^2 \div 2^4 \\ = & 5^{1+2} \times 2^{3 \times 3-4} \\ = & 5^3 \times 2^5 \\ = & (5 \times 2)^3 \times 2^2 \\ = & 4000 \end{aligned} $$

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