Шаблон:Convert/LoffAoffDbSonper
This Template:Convert/LoffAoffDbSonper formats a 1-unit conversion with parentheses "( )" for units of type per-/n, with hyphenation (adj=on), and runs the conversion by invoking {{convert/{{{o}}}|..}} or {{convert/{{{3}}}|..}}. For more details, see: Help:Convert.