I am looking for a program that correctly spaces the procedure of long division we all did in elementary school.
As minimal example I have but still have trouble with spacing and suppose I wanted to put in subtraction symbols, I find I have no room.
\documentclass{article}
\usepackage{amsmath}
\usepackage{geometry}
\begin{document}
\begin{center}
$\begin{tabular}{r@{}l@{}c@{}c@{}c@{}c@{}c@{}l@{}c@{}}
& & & & & && \\
& & &.&1&8 & & \\ \cline{2-7} \\ [-12.3pt]
11&\big )&2&.&0&0&0& \\
& &1& 1& & & & \\ \cline{3-5}
& & &9&0& & & \\
& & &8&8& & & \\ \cline{4-6}
& & & &2&0& & \\
& & & &1&1& & \\ \cline{5-6}
& & & & &9& &
\end{tabular}$
\end{center}
\end{document}
The decimal point is causing a spacing problem. I am finding little material on this on the web. This outputs
There must a better more versatile way to do this?

{.}to avoid possible unexpected spacing, and then insert\phantom{.}in the appropriate position in the "next" line. – barbara beeton Aug 03 '19 at 20:52