Calcul (nombres naturels)

$$\begin{array}{rrrrrr} & {\small\color{red}{}} & {\small\color{red}{}} & {\small\color{red}{}} & {\small\color{red}{}}\\ & 1 & 7 & 5 & 6\\ - & 1 & 6 & 1 & 2\\ \hline & 0 & 1 & 4 & 4\\ \end{array}$$

Nouvel exemple