Cuál es el resultado de la siguiente operación? (4/8)(2/3)(1/5)

$$\left({\frac{{\mathtt{4}}}{{\mathtt{8}}}}\right){\mathtt{\,\times\,}}\left({\frac{{\mathtt{2}}}{{\mathtt{3}}}}\right){\mathtt{\,\times\,}}\left({\frac{{\mathtt{1}}}{{\mathtt{5}}}}\right) = {\frac{{\mathtt{8}}}{{\mathtt{120}}}} = {\frac{{\mathtt{4}}}{{\mathtt{60}}}} = {\frac{{\mathtt{2}}}{{\mathtt{30}}}} = {\frac{{\mathtt{1}}}{{\mathtt{15}}}}$$