在数学乘法中插入乘法符号

Question

\documentclass{article}

% My MWE  original version
% I did use mtpro fonts
% how to use slop since I don't have the package 'slop'
\usepackage{amsmath}
\begin{document}

\begin{tabular}{  l r   r   r} 
  & $0.0735$            \\
   &\times  $294$           \\
  \hline
  &$2940 $              \\
  &$6615$               \\
  & +$ 1470$                \\
  \hline                    
  &$21.6090$                \\
 \hline                 \\
 \end{tabular}

\end{document}

Answer 1

我相信这就是你想要的。建议你阅读以下文档：http://texdoc.net/texmf-dist/doc/generic/xlop/xlop-doc.pdf

\documentclass{article}
\usepackage{xlop}
\begin{document}
\opmul{0.0735}{294}\qquad
\end{document}

Answer 2

^{这是对修订 1或者修订版 2。}

你是指这样的事情吗？

\documentclass{article}
\usepackage{array}
\usepackage{siunitx}

\begin{document}
\begin{tabular}{>{$}l<{$} @{ } S[table-format=2.4]}
         & 0.0735  \\
  \times & {294}   \\
  \hline
         & 14.70   \\
  +      & 6.615   \\
  +      & 0.2940  \\
  \hline
  =      & 21.6090 \\
  \hline
\end{tabular}
\end{document}

或者

\documentclass{article}
\usepackage{array}
\usepackage{siunitx}

\begin{document}
\begin{tabular}{>{$}l<{$} @{ } S[table-format=2.4] @{ } l}
         & 0.0735 & $\times$ 294 \\
  \hline
         & 14.70   \\
  +      & 6.615   \\
  +      & 0.2940  \\
  \hline
  =      & 21.6090 \\
  \hline
\end{tabular}
\end{document}