TeX Quellcode:

\begin{array}{rcl} \genfrac{}{}{1pt}{0}{\frac{-71k}{-4lm}}{-401k} &=& \dfrac{-71k}{-4lm} : (-401k) \\\\&=& \dfrac{71k}{4lm} \cdot \left(-\dfrac{1}{401k} \right) \\\\&=& \dfrac{71}{4lm} \cdot \left(-\dfrac{1}{401} \right) \\\\&=& -\dfrac{71}{1.604lm} \end{array}