\documentstyle{report}
\begin{document}
\tracingall
\noindent
So we expect to make $(6 \cdot 172 - 1000)/1000$ dollars,
which is 3.2 cents, per play.
{\em We,} not the house, have the advantage
(of course for all we know the house may have made
some numbers are more equal than others).
\showlists
\tracingonline0
\end{document}