Matrix equations Determinant questions

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I'm currently figuring out the following question but I 'm having trouble understanding it. The question is as follows:

Of the $4\times 4$ Matrix $A$ it's given that $\det (5A^3) = \det(A^T)$. Deduce the possible values of $\det(A)$."


I know the following:

A determinant of a transposed matrix should be the same as a determinant of the normal matrix.

Det $5*A^3$ should be $5^4*A$ with the $^4$ coming from the $4\times 4$ matrix, right?

That's the limit of my current knowledge though, anyone willing to explain what I'm missing to come to the correct equation?