\documentclass[11pt]{article}
\usepackage{amssymb,amsmath,amscd,concmath}
% we can define whatever comments we would like to use for consistency.
% of course we have to somewhere list this special commands (may be we can use
% a pop up with editiing help or somkething similar

\newcommand{\rs}{\ensuremath{\gg}} %right shift >>
\newcommand{\ls}{\ensuremath{\ll}} %left shift <<
\newcommand{\rr}{\ensuremath{\ggg}}  %right rotate >>>
\newcommand{\lr}{\ensuremath{\lll}}  %left rotate <<<
\newcommand{\hex}[1]{\texttt{#1}}
\pagestyle{empty}
\begin{document}
%this ia a comment within the body
%originally value was within begin/end equation 

\begin{equation*}
    \begin{aligned}
        K_i &= \hex{5A827999} \quad \text{for $i=\phantom{0}0,\dots,19$} \\
        K_i &= \hex{6ED9EBA1} \quad \text{for $i=20,\dots,39$} \\
        K_i &= \hex{8F1BBCDC} \quad \text{for $i=40,\dots,59$} \\
        K_i &= \hex{CA62C1D6} \quad \text{for $i=60,\dots,79$} \\
    \end{aligned}
\end{equation*}

\end{document}