I don't know where you've got your figures from. The current first place contestant for November has 70 beside the ranking of 10. I read that has 70 votes that gave her a rank of 10. Let's assume they were all from lifers. Then the total score for just the rank of 10 would be (71*10*3) or 2130.
I took the 71 from beside the 10, multipled it by 3 and then multiplied that by 10 (the rank). Now I may not be totally accurate in how its done since I'm just guessing, but my guess will produce scores that are about what we are seeing.
Cheers,
rfs