Find out the number of ways in which 6 rings of different types can be worn in 3 fingers.
Assuming the rings and the fingers are all unique and order counts
and that the rings are small and the fingers long then
there are 6! ways to line up the rings = 720
There is 6 rings divided by 2 bars (so you get three allocations)
so I think the answer is just 720*28 = 20160 ways
(might not be right)