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\begin{align*}
  \text{S} & = \frac{n}{t} \cdot \sqrt{\frac{n}{84}} / 0.0014 \\
  & = \frac{n}{t} \cdot \frac{\sqrt{\frac{n}{84}}}{0.0014} \\
  & = \frac{n}{t} \cdot \frac{\sqrt{n}}{\sqrt{84}\cdot 0.0014} \\
  & = \frac{n}{t} \cdot \frac{\sqrt{n}}{0.012831211946} \\
  & = \frac{\sqrt{n^3}}{0.012831211946\cdot t} \\
\end{align*}
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