This is just a small part of the tresure hunt event organised by me for the 1st anniversary event of NightOwl discord server.
You have crossed your first test succesfully Listen to the audio file and you will get answers to all of your questions.
Remember : "=" equal to "-"
EDIT- If You are unable to download the .wav file from this repo then u can access it via https://drive.google.com/file/d/1PuUS2FdU1XA99n1bU_6sxstyzeyZwWGb/view?usp=sharing