When Someone upvotes your content the author (you) gets 50% of the displayed rewards. The curator (upvoters) share the other 50% in a ratio that is dependent on their vote weight/vote timing. For example I just upvoted your comment above. If you go to https://www.splintertalk.io/@dekleine043/re-rentmoney-ktvvxetf you will see that your above comment that I just upvoted has 66 SPT in rewards pending. You will earn 33 SPT because you are the author of the upvoted comment. I and other upvoters of your comment will then share the other 33 SPT based on our vote weight/ vote timing and possibly some other stuff I know nothing about.