Prize pool distribution formula

Hi guys,

i would appreciate your help with the below.

I am to create a prize pool (as part of my mastery project) and I am a bit stuck.

So, I would like if possible to get a formula where excel will automatically distribute the winning from a prize pool for n amount of participants with 10% (of participants) paid. Just like a poker tournament prize pool. I have attached a manual one I made for reference, but imagine if i had e.g. 1mil participants.

Thank you in advance.