There's no set returns. The system will be sending out 144,000 tokens every day but how many to each user is determined by the total number of SPORTS burnt that day.

For example, you burn 10k to promote a post. If you're the only person that day that burns then you'd get 144k back. If there were 20 people to do the same thing that day then you'd only get back 7,200 because the 144k would be split among the total daily burnt.