Let's assume you are the paid upvote bot. I think your upvote is worthy $0.07. I buy all your upvotes, so on daily basis I get $0.70 on upvote value. That will be $255.5 power year. Which results in APR of 24%. And then I forgot to take curation rewards into account, cause I now have about 25% loss.
I guess this is Pretty close but not a perfect calculation. But it looks like you didn't get any decent calculation so far.
I do not think you are right with that calculation. I think 24% APR becomes new 100% and you need to deduct curation rewords from that 24 %. am I right?
I forgot about the 25% curation rewards to keep it simple. So you should indeed deduct that.
Your other remark/question I don't understand. Are you referring to something like compound interest. Where your upvote value will grow slightly during the year?