כפל במאונך: דו בדו

‎\[
\begin{equation} \begin{array}{r}
\smash{ 31 } \\
\times 66 \\ \hline \INPUTBOX{1}{rtl}{186} \, \\
\Rule{0pt}{6pt}{2.5pt}
\smash{ \INPUTBOX{2}{rtl}{186} \, \, \, \, \, }
\Rule{0pt}{2pt}{2pt}
\\
\hline \INPUTBOX{3}{rtl}{2046} \,
\end{array} \end{equation}
\]

‎\[
\begin{equation} \begin{array}{r}
\smash{ 67 } \\
\times 62 \\ \hline \INPUTBOX{1}{rtl}{134} \, \\
\Rule{0pt}{6pt}{2.5pt}
\smash{ \INPUTBOX{2}{rtl}{402} \, \, \, \, \, }
\Rule{0pt}{2pt}{2pt}
\\
\hline \INPUTBOX{3}{rtl}{4154} \,
\end{array} \end{equation}
\]

‎\[
\begin{equation} \begin{array}{r}
\smash{ 96 } \\
\times 58 \\ \hline \INPUTBOX{1}{rtl}{768} \, \\
\Rule{0pt}{6pt}{2.5pt}
\smash{ \INPUTBOX{2}{rtl}{480} \, \, \, \, \, }
\Rule{0pt}{2pt}{2pt}
\\
\hline \INPUTBOX{3}{rtl}{5568} \,
\end{array} \end{equation}
\]

‎\[
\begin{equation} \begin{array}{r}
\smash{ 26 } \\
\times 61 \\ \hline \INPUTBOX{1}{rtl}{26} \, \\
\Rule{0pt}{6pt}{2.5pt}
\smash{ \INPUTBOX{2}{rtl}{156} \, \, \, \, \, }
\Rule{0pt}{2pt}{2pt}
\\
\hline \INPUTBOX{3}{rtl}{1586} \,
\end{array} \end{equation}
\]