<<< mml $$\left(\begin{array}{cc}12x\text{First row, first column}& 0\text{First row, last column}\\ 0\text{Last row, first column}& 117\text{Last row, last column}\end{array}\right)$$ >>> native [ EDelimited "(" ")" [ Right (EArray [ AlignCenter , AlignCenter ] [ [ [ EGrouped [ ENumber "12" , EIdentifier "x" ] ] , [ ENumber "0" ] ] , [ [ ENumber "0" ] , [ ENumber "117" ] ] ]) ] ]