$$\begin{array}{c}\phantom{\times9999}312\\\underline{\times\phantom{99}13666}\\\phantom{\times999}1872\\\phantom{\times99}1872\phantom{9}\\\phantom{\times9}1872\phantom{99}\\\phantom{\times9}936\phantom{999}\\\underline{\phantom{\times}312\phantom{9999}}\\\phantom{\times}4263792\end{array}$$