Tính:

\[\begin{array}{l} \times \begin{array}{*{20}{c}}{346}\\{\underline {\,\,\,\,\,\,2} }\end{array}\\\,\,\,692\end{array}\]

\[\begin{array}{l} \times \begin{array}{*{20}{c}}{217}\\{\underline {\,\,\,\,\,\,4} }\end{array}\\\,\,\,868\end{array}\]

\[\begin{array}{l} \times \begin{array}{*{20}{c}}{105}\\{\underline {\,\,\,\,\,\,6} }\end{array}\\\,\,\,630\end{array}\]

\[\begin{array}{l} \times \begin{array}{*{20}{c}}{328}\\{\underline {\,\,\,\,\,\,3} }\end{array}\\\,\,\,984\end{array}\]