log(14)^21 evaluate using change base formula?

I the problem is:  evaluate log₁₄₍21), then use the change of base formula to get:  log₁₀(21) / log₁₀(14)

which is equivalent to log(21) / log(14).

You can also use natural logs to get ln(21) / ln(14).

Notice that the number (21) goes into the numerator and the base (14) goes into the denominator.