Expand the following: \begin{align} Γ_{red} = \frac{P_{red}}{ω_{red}} =&\cssId{Step1}{\frac{{η}{P_{mot}}}{ω_{red}}}\\[3px] =&\cssId{Step2}{\frac{{η}{Γ_{mot}}}{τ}}\\[3px] =&\cssId{Step3}{51,72 Nm}\\[3px] \end{align}