Evaluate $\sum\limits_{i=0}^{n}\frac{1}{6^i}$

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I'm asked to evaluate: $$\sum\limits_{i=0}^{n}\frac{1}{6^i}$$

Since it's a geometric series, I got $\dfrac{1-\frac{1}{6^n}}{\frac56}$ but I think it could be wrong.