[tex] \begin{matrix}\it \ __{ 2533} +\\
\it __{533}\\ \ \it __{33} \\ \ \it __{3} \end{matrix}\\
.......
\\
\it __{3102} [/tex]
[tex]\begin{matrix}\it \ __{ 2498} +\\ \it __{498}\\ \ \it __{98} \\ \ \it __ {8} \\ ..... \\ \it __{3102} \end{matrix}[/tex]
