%%
%%  A DANTE-Edition example
%%
%%  Example 02-14-10 on page 80.
%%
%%  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,eurosym}

\begin{document}
\begin{spreadtab}{{tabular}{rr |r}}
@ month & @ income & @ tax \\\hline
     1 &  5409    & b2*0.3 \\
     2 &  4523    & b3*0.3 \\
     3 &  4711    & b4*0.3 \\\hline
       & \llap{sum: :={sum(b2:b4)} \euro}
        & $\sum$: :={sum(C2:C4)}
\end{spreadtab}
\end{document}