\begin{calstable} \colwidths{{1cm}{7cm}{1cm}} \brow \cell{x} \cell{x} \cell{x} \erow \brow \cell{x} \cell{ \columnsep=0cm\relax % Force multicols to regard our \leftskip % by pretending that we are a list. \@totalleftmargin=\cals@paddingL\relax \begin{multicols}{2} \begin{calstable} \alignR \colwidths{{1.5cm}{1.5cm}} \thead{\brow \cell{$n$}\cell{$n^2$} \erow} \tfoot{\brow \cell{$n$}\cell{$n^2$} \erow} \brow \cell{2} \cell{4} \erow \brow \cell{3} \cell{9} \erow \brow \cell{4} \cell{16} \erow \brow \cell{5} \cell{25} \erow \brow \cell{6} \cell{36} \erow \tbreak{\break } \brow \cell{7} \cell{49} \erow \brow \cell{8} \cell{64} \erow \brow \cell{9} \cell{81} \erow \brow \cell{10} \cell{100} \erow \brow \cell{11} \cell{121} \erow \end{calstable} \end{multicols} } \cell{x} \erow \brow \cell{x} \cell{x} \cell{x} \erow \end{calstable}