You can see how many shares you will obtainFirst Mining Gold under Treasury Metals Distribution they have the calculator showing how many shares you will obtain and warrants for the FF shares you own.
https://firstmininggold.com/investors/treasury-metals-distribution/
For example of you currently own 100,000 shares of FF you will get 3344 shares of Treasury Metals and 1672 shares of Trasury Metals Warrants.