First number is 986
Then 9*8/8*6 = 72/48 = 7248 (it is second number)
Then 7*2/2*4/4*8 = 14/8/32 = 14832 (it is third number)
Then 1*4/4*8/8*3/3*2 = 4/32/24/6 = 432246 (it is fourth number)
Then 4*3/3*2/2*2/2*4/4*6 = 12/6/4/8/24 =1264824 (it is fifth number)
Similarly 1*2/2*6/6*4/4*8/8*2/2*4 = 2/12/24/32/16/8 = 2122432168