$${\frac{{\mathtt{6}}}{\left({\frac{{\mathtt{5}}}{{\mathtt{6}}}}\right)}} = {\frac{{\mathtt{36}}}{{\mathtt{5}}}} = {\mathtt{7.2}}$$ is the same as $${\mathtt{6}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{6}}}{{\mathtt{5}}}}\right) = {\frac{{\mathtt{36}}}{{\mathtt{5}}}} = {\mathtt{7.2}}$$, when dividing with a fraction you invert it so that you multiply with 6/5 in this case.
$${\frac{{\mathtt{6}}}{\left({\frac{{\mathtt{5}}}{{\mathtt{6}}}}\right)}} = {\frac{{\mathtt{36}}}{{\mathtt{5}}}} = {\mathtt{7.2}}$$ is the same as $${\mathtt{6}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{6}}}{{\mathtt{5}}}}\right) = {\frac{{\mathtt{36}}}{{\mathtt{5}}}} = {\mathtt{7.2}}$$, when dividing with a fraction you invert it so that you multiply with 6/5 in this case.
