%% 
%%  Example 01-11-2 
%%  Copyright (C) 2017 Herbert Voss
%% 
%% ==== 
% Show page(s) 1
%% 
%% 
\documentclass[]{screxa}
\pagestyle{empty}
\setlength\textwidth{158.31393pt}
\usepackage[T1]{fontenc}
\usepackage{kpfonts}
%StartShownPreambleCommands
\usepackage{amsmath}% for align
%StopShownPreambleCommands
\begin{document}
\begin{align}
1,234,567.89 & \text{ default}\\
1.234.567,89 & \text{ vice versa, wrong spacing}\\
1\mathpunct{.}234\mathpunct{.}567{,}89
             & \text{ correct spacing}
\end{align}
\end{document}
