$${\mathtt{123}}{\mathtt{\,\times\,}}{\mathtt{798}}{\mathtt{\,\small\textbf+\,}}{\mathtt{7}}{\mathtt{\,\times\,}}\left({\mathtt{9}}\right){\mathtt{\,-\,}}{\mathtt{8}}{\mathtt{\,\times\,}}\left({\mathtt{4}}\right){\mathtt{\,\small\textbf+\,}}{\mathtt{900}} = {\mathtt{99\,085}}$$
.$${\mathtt{123}}{\mathtt{\,\times\,}}{\mathtt{798}}{\mathtt{\,\small\textbf+\,}}{\mathtt{7}}{\mathtt{\,\times\,}}\left({\mathtt{9}}\right){\mathtt{\,-\,}}{\mathtt{8}}{\mathtt{\,\times\,}}\left({\mathtt{4}}\right){\mathtt{\,\small\textbf+\,}}{\mathtt{900}} = {\mathtt{99\,085}}$$