if we want a complex fraction, we can take a simple fraction and multiply it by some other fraction. in out case, these can be obtained if we mupltiply 1/4 by some other fraction for example:
1/2:
[tex] \frac{ \frac{1}{2} }{ \frac{4}{2} } [/tex]
Or we could expess one of the numbers as a fraction:
[tex] \frac{1}{ \frac{4}{1} } [/tex]
[tex] \frac{ \frac{1}{1} }{4 } [/tex]
