Выполни деление с остатком:

\(\begin{array}{ll} \begin{array}{l} {\phantom{-}}3420 \\ {\,\,\,\underline{\square}\,\,\,\,\,} \end{array} & \left| \begin{array}{l} \underline{800} \\ \square. \end{array} \right. \\ {\,\,\,\,\,\,\square} \end{array}\)