九分 leverages the Chinese ten-part scale: saying '
九分像 X' means 'looks 90% like X'. Set phrases include
九分熟 (nine-tenths cooked, i.e. well-done),
九分把握 (90% confident),
七分像,
三分演 (seven-tenths real, three-tenths acted). Also a literal duration ('nine minutes') or money ('nine cents') depending on context.