A deck of cards is shuffled. What is the probability that all spades are together?

This would be like drawing a spade (or any suit for that matter) from a deck of cards one-by-one. Probability is: 13/52*12/51*11/50*10/49*9/48*8/47*7/46*6/45*5/44*4/43*3/42*2/41*1/40 = 6227020800/3.95424E21= 1.57477E-12= 0+