wie ist 3 ganze und 1ganze und ein drittel ?

$${\mathtt{3}}{\mathtt{\,\small\textbf+\,}}{\mathtt{1}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{3}}}} = {\frac{{\mathtt{13}}}{{\mathtt{3}}}} = {\mathtt{4.333\: \!333\: \!333\: \!333\: \!333\: \!3}}$$    =  $$4\frac{1}{3}$$

$${\frac{{\mathtt{9}}}{{\mathtt{3}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{3}}}{{\mathtt{3}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{3}}}} = {\frac{{\mathtt{13}}}{{\mathtt{3}}}}$$

Gruß radix !  (und eine gute Nacht !)