The scrap value of a machine at the end of its useful life is given by $$S$($n$)=$C$(1-$r$)^$n where C is the original$$ cost$,$ n is the useful life of the machine in$$ years, and r is the constant annual percentage of value lost. Find the scrap value of the following machine. Original cost, $$51,000$ life, $8$ years, annual rate of value lost $14\%.$ What does S$=?$