%Dokumenttyp bestimmen
\documentclass[a4paper,fontsize=9pt,twoside=false,german,landscape]{scrlttr2}

%Packages einbinden
%\usepackage[a4paper,landscape,layoutvoffset=-2cm]{geometry}
\usepackage[margin=2cm]{geometry}
\usepackage[german]{babel}
\usepackage[latin1]{inputenc}
\usepackage{textcomp} %Eurosymbol
\usepackage{graphicx}
\usepackage{longtable}
\usepackage{colortbl}
\usepackage{color}
\usepackage{multirow}
\usepackage{lastpage}
\usepackage{textfit}
\usepackage{setspace}
\usepackage{fancyhdr}
\usepackage{wallpaper}
\usepackage[scaled=.90]{helvet}
\usepackage{lastpage}

\pagestyle{myheadings}
\renewcommand{\familydefault}{\sfdefault}
\definecolor{lightgrey}{rgb}{0.9,0.9,0.9}
\definecolor{darkgrey}{rgb}{0.8,0.8,0.8}
\newcolumntype{R}[1]{>{\raggedleft\arraybackslash}p{#1}}
\newcolumntype{L}[1]{>{\raggedright\arraybackslash}p{#1}}

\newlength{\maxwidth}
\setlength{\maxwidth}{\textwidth-3cm}
\markboth{\textbf{$rheader$}}{\textbf{$lheader$}}

%Dokumentabschnitt beginnt
\begin{document}

\pagestyle{fancy}
\cfoot{Seite \thepage\ von \pageref{LastPage} }

$all_tables$

\end{document}