Hello everyone. Somehow I have thought a concept about making a little application to play with.
It is the Prize Box Simulator. Anyone can try inputting prize pools percentage chance and their prize items to see what you would get from "your box" without/before spending one to open an actual box.
The number of prize pools, their prizes within, percentage of prize pools are all configurable. Attempts and samples are also available such that you can run the simulation multiple times to see the output via a table.
(To be honest I just want to see the chance of getting Celestial weapons in the "Equinox Prize Box Promotion September 2019")

You can access the simulator by clicking here, enjoy!

I may add more features in the future as well! (if I have the time)

Disclaimer: The randomization and item reward mapping algorithm of this simulator may NOT be the same as the actual game's but I worked my best to simulate. Please only take the sample as references only and this simulator does not guarantee any in-game reward.