The change of base formula states that:
\[
\log_b(a) = \frac{\log_k(a)}{\log_k(b)}
\]
where \( b \) is the new base, \( a \) is the number we want to express as a logarithm, and \( k \) is any positive number (commonly 10 or \( e \)). In this case, we want to
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