Express $\frac{3x}{3}$3x3 in simplest form.

Simplify the expression $\frac{20n}{5}$20n5.

Simplify the expression $\frac{8m}{32}$8m32.

Express $\frac{8x}{16}$8x16 in simplest form:

Multiply a polynomial by a monomial involving the same variable to give results up to degree three using a variety of tools