You take $60\text{ mg}$ of a vitamin supplement daily. Each day, $60\%$ of the vitamin is eliminated from your body. Let $v_n$ be the amount of the vitamin in your body after the $n$^th dose, with $v_1=60$. What is the steady-state amount of the vitamin in your body? Solve the problem by writing the amount of the vitamin in your body as a geometric series and evaluating the series.