http://rechneronline.de/runden/
http://de.wikipedia.org/wiki/Rundung
http://welt-zeit-uhr.de/zahlensysteme/index.php
$${\mathtt{0}}{\mathtt{\,\times\,}}{{\mathtt{5}}}^{{\mathtt{0}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{3}}{\mathtt{\,\times\,}}{{\mathtt{5}}}^{{\mathtt{1}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{4}}{\mathtt{\,\times\,}}{{\mathtt{5}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{2}}{\mathtt{\,\times\,}}{{\mathtt{5}}}^{{\mathtt{3}}} = {\mathtt{365}}$$
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