When a monomial is divided by itself, we will get $1$.

Divide $12x^3{y}^2$ by $x^{2}y$.

Divide

$-20a^5{b}^2$ by $2a^3{b}^7$

Divide

$28a^4{c}^2$ by $21c{a}^2$

Divide:

${\left(3x^{2}y\right)}^3$ by $\sqrt{6} x^2{y}^3$

Divide:

$64m^4{\left(n^2\right)}^3$ by $4m^2{n}^2$

Divide:

${\left(8x^2{y}^2\right)}^3$ by ${\left(8x^2{y}^2\right)}^2$

Divide:

$81p^2{q}^4$ by $\sqrt{81p^2{q}^4}$

Divide:

${\left(4x^2{y}^3\right)}^0$ by $\frac{{\left(x^3\right)}^2}{x^6}$