http://symbolab.com/solver/step_by_step/x%5E%7B3%7D%3D8/?origin=button
$${\frac{{\mathtt{1}}}{{\mathtt{0.05}}}} = {\mathtt{20}}$$ ; $${\frac{{\mathtt{1}}}{{\mathtt{0.000\: \!000\: \!005}}}} = {\mathtt{200\,000\,000}}$$ ; $${\frac{{\mathtt{1}}}{{\mathtt{0.000\: \!000\: \!000\: \!000\: \!05}}}} = {\mathtt{20\,000\,000\,000\,000}}$$
http://matheguru.com/allgemein/112-division-durch-0.html
http://www.liste-null.de/division.php