\documentclass{article}
\begin{document}
\begin{writehaskell}
minNumber :: Integer
minNumber = 1

maxNumber :: Integer
maxNumber = 10000000
\end{writehaskell}
The teacher asked the student:
``What is the result of suming all the numbers from \evalhaskell{minNumber} to \evalhaskell{maxNumber}''.
After a few seconds thinking about it, the student gave an answer.
\begin{itemize}
\item[-] The result is \evalhaskell[memo]{sum [minNumber .. maxNumber]}.
\item[-] That is correct! The result is \evalhaskell[memo]{sum [minNumber .. maxNumber]}.
\end{itemize}
\end{document}