Simplify the following expressions and write all answers with positive exponents and no radicals.

Given:
Expression is
[tex]\frac{6ab^3}{(6b)^3}[/tex]Required:
Simplify the following expression.
Explanation:
We will simplify as
[tex]\begin{gathered} =\frac{6ab^3}{(6b)^3} \\ =\frac{a}{36} \end{gathered}[/tex]Answer:
Hence, above is the expression.