Step 2:
Apply the power of a power property of exponents, which states \((a^m)^n = a^{m \cdot n}\). Here, \(a = 8\), \(m = -1\), and \(n = -7\).
\[
\left(8^{-1}\right)^{-7} = 8^{-1 \cdot -7} = 8^7
\]
Step 3:
Identify the equivalent expressions from the given
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