Answer
$\displaystyle \frac{1}{6}\cdot x$
Work Step by Step
$\left[\begin{array}{cccc}
\dfrac{1}{6} & \text{of } & \text{ a number }\\
& & \\
\downarrow & \downarrow & \downarrow\\
\dfrac{1}{6} & \times & x
\end{array}\right]$
$\displaystyle \frac{1}{6}\cdot x$