$${\frac{{\mathtt{2}}}{{\mathtt{5}}}}{\mathtt{\,\times\,}}{\mathtt{5\,000}} = {\mathtt{2\,000}}$$
$${\frac{{\mathtt{9}}}{{\mathtt{28}}}}{\mathtt{\,\times\,}}{\mathtt{578.5}} = {\mathtt{185.946\: \!428\: \!571\: \!428\: \!571\: \!4}}$$
$${\frac{{\mathtt{2}}}{{\mathtt{5}}}}{\mathtt{\,\times\,}}{\mathtt{5\,000}} = {\mathtt{2\,000}}$$
$${\frac{{\mathtt{9}}}{{\mathtt{28}}}}{\mathtt{\,\times\,}}{\mathtt{578.5}} = {\mathtt{185.946\: \!428\: \!571\: \!428\: \!571\: \!4}}$$