Why is the following $\frac{3^n}{3^{n+1}}$ equal to $\frac{1}{3}$?

Question

I am trying to solve an exercise with ratio test. I need an explanation why the following equation below is equal to $\frac{1}{3}$ $$\frac{3^n}{3^{n+1}}$$

Thanks in advance, i am going to need some help with tags :)

Answer 1

note that $3^{n+1}=3^n\cdot 3$

Answer 2

Note that by definition

$$3^n=3\cdot 3 \cdot 3\cdot...\cdot 3 \quad\text{n times}$$