Условие:
$\begin{array}{r} \begin{array}{r} + \end{array} \begin{array}{r} 54 \\ 26 \end{array} \\ \begin{array}{r} \end{array} \end{array}$

\begin{array}{r} \begin{array}{r} + \end{array} \begin{array}{r} 54 \\ 26 \end{array} \\ \begin{array}{r} 80 \end{array} \end{array}

Условие: + 54 26