The \textbf{mean} of the following eight numbers is $$6$$. Find the missing number.  $$9$$~ ~ ~ $$7$$~ ~ ~ $$5$$~ ~ ~ $$8$$~ ~ ~ $$4$$~ ~ ~ $$1$$~ ~ ~ $$8$$~\uline{~~~~~~~~~~}~ 
Overseas Competition->Knowledge Point->Calculation Modules->Whole Numbers->Whole Numbers Multiplication and Division->Understanding Meanings of Multiplication