Best actor: 8 nominations + 1 win = (8*0.4 + 2) = 5.2
Best supporting actor: 1 nomination = 0.2
Total = 5.4
I didn't check the other ones you mentioned, but I used a script so there's a good chance we are accurate unless the source data is wrong.
Part of what makes this interesting is that, in one case, they were both nominated for the same film: Becket.