The \textbf{mean} of the following eight numbers is $$5$$. Find the missing number.  $$9$$~ $$1$$~ $$7$$~ $$4$$~ $$3$$~ $$6$$~\uline{~~~~~~~~~~}~$$8$$ 
Overseas Competition->Knowledge Point->Calculation Modules->Whole Numbers->Whole Numbers Multiplication and Division->Understanding Meanings of Multiplication