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