TeX Quellcode:

\begin{array}{rcl}\genfrac{}{}{1pt}{0}{33b^{22}q^7}{\frac{99b^{19}q^{11}}{m^2}} &=& 33b^{22}q^7 : \dfrac{99b^{19}q^{11}}{m^2} \\\\&=& 33b^{22}q^7 \cdot \dfrac{m^2}{99b^{19}q^{11}} \\\\&=& b^3 \cdot \dfrac{m^2}{3q^4} \\\\&=& \dfrac{b^3m^2}{3q^4} \end{array}