\documentclass{article}

\usepackage{mkessler-mathop}

\begin{document}
\[
    \Gal \Quot \PreSh \tensor \Var \Br \Set \CHaus \cfun \One \left\lfloor \frac{1}{\frac{3}{\frac{7}{8}}} \right\rfloor \abs{\frac{1}{\frac{8}{\frac{4}{3}}}}  \lVert \frac{a}{\frac{b}{c}} \rVert  \left< \frac{a}{\frac{b}{c}} \right> \norm{\frac{a}{\frac{b}{c}}} \norm{test}  \norm{\frac{a}{\frac{b}{c}}}
\] 
\end{document}