Найдите сумму.
1)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}12327\\ 19846\end{array}}\\ \begin{array}{r}\mathrm{}\end{array}\end{array}$
2)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}243928\\ 728172\end{array}}\\ \begin{array}{r}\mathrm{}\end{array}\end{array}$
3)
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}8166456\\ 1833544\end{array}}\\ \begin{array}{r}\mathrm{}\end{array}\end{array}$