​what is 20*7*17*8*3*15?

20 x 7 x 17 x 8 x 3 x 15 =140 x 17 x 8 x 3 x 5 = 2380 x 8 x 3 x 5 = 19040 x 3 x 5 = 57120 x 5 = 285600