TeX Quellcode:

\genfrac{}{}{1pt}{0}{\frac{-5}{72}}{\frac{-40}{11}} = \dfrac{-5}{72} : \dfrac{-40}{11} = -\dfrac{5}{72} \cdot \left(-\dfrac{11}{40}\right) = -\dfrac{1}{72} \cdot \left(-\dfrac{11}{8}\right) = \dfrac{11}{576}