How do I increase the spacing between the numbering and the text in the table of contents? Note that I am using the article class and use \addcontentsline{toc}.
Code:
\documentclass[12pt]{article}
\newcounter{chapternum}
\newcounter{examplenum}
\newcommand{\example}{\stepcounter{examplenum} \noindent{\large{\color{Red}{Example \theexamplenum: }}}\addcontentsline{toc}{subsubsection}{Example \theexamplenum}}
\renewcommand\thesection{\thechapternum.\arabic{section}}
\renewcommand\thesubsection{\thesection.\arabic{subsection}}
\begin{document}
\stepcounter{chapternum}
\tableofcontents %Ignore the page numbers; the picture is a screenshot from my document and this code is a MWE.
\section{Sets}
\subsection{Introduction to Sets}
\subsection{Union and Intersection}
\example
\subsection{Special Sets}
\subsection{Interval Notation}
\example
\end{document}


