Hello @reza-khem, thank you very much for participating in this beautiful contest, we are very happy that you have met incredible people here like this and that you have fulfilled your achievements in the community of newcomers. I hope that in the following link you can find information that helps you understand how the rewards are distributed:

https://steemit.com/faq.html

However, I will try to explain what I understand about it

With the 50-50% setting on a post that has accumulated 30STU until the last day (7).

1- We know that 49.9% go to the curator. = 15 STU.
2- We also know that the other 50% are for the author 15 STU, which is distributed as follows:

• Half = 7.5 LIQUID SBD
• The other half = 7.5 USD for your STEEM POWER, that is, the amount of SP you will receive will depend on the price of the STEEM in the market, IF the STEEM IS WORTH 1 USD, the amount you will receive 7.5 SP

But the price of the steem in the market during the active period of your publication (7 days) will influence the final result of your rewards when claiming them.

I am also sure that if you put effort and dedication you will increase your Steem Power much more than you expect in these next 6 months.

Thank you very much for participating.

By the way, I want to remind all the users who are watching this, that it is necessary to include the link of achievement 1 at the end of each one of your posts within Steem Nursery. Thank you very much to all.