%% 
%%  A DANTE-Edition example
%% 
%%  Example 02-14-2 on page 77.
%% 
%%  Copyright (C) 2010 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{201.70511pt}
\setlength\parindent{0pt}

\usepackage{spreadtab}

\begin{document}
\begin{spreadtab}{{tabular}{rr |r}}
      27 &       54 & a1+b1 \\
      58 &       45 & a2-b2 \\
      50 &       25 & a3*b3 \\
      60 &       47 & a4/b4 \\\hline
a1+a2+a3 & b1+b2+b4 & a5/b5
\end{spreadtab}
\end{document}
