The given expression is
[tex]\begin{gathered} \frac{1}{2}\text{ divided by 4} \\ \text{The division symbol can be changed to multiplication and 4 becomes }\frac{1}{4} \\ \text{The expression becomes} \\ \frac{1}{2}\times\frac{1}{4} \\ =\text{ }\frac{1}{8} \end{gathered}[/tex]