$${\mathtt{4}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{3}}}{{\mathtt{5}}}}\right)$$ is the same as $${\frac{{\mathtt{4}}}{{\mathtt{1}}}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{3}}}{{\mathtt{5}}}}\right)$$.
You multiply the top numbers together and the bottom numbers together, so its $${\frac{{\mathtt{12}}}{{\mathtt{5}}}}$$
.$${\mathtt{4}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{3}}}{{\mathtt{5}}}}\right)$$ is the same as $${\frac{{\mathtt{4}}}{{\mathtt{1}}}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{3}}}{{\mathtt{5}}}}\right)$$.
You multiply the top numbers together and the bottom numbers together, so its $${\frac{{\mathtt{12}}}{{\mathtt{5}}}}$$