TeX Quellcode:
\genfrac{}{}{1pt}{0}{\frac{-42}{5}}{102} = \dfrac{-42}{5} : \dfrac{102}{1} = -\dfrac{42}{5} \cdot \dfrac{1}{102} = -\dfrac{7}{5} \cdot \dfrac{1}{17} = -\dfrac{7}{85}