How to Write an Equation in Google Docs

I had a lot of questions about it using obsidian instead of Google Docs. What are your initial questions? How? Beyond the obvious ones, because obviously how do you write an equation? Well, that's the only one I care about. It's just writing an obsidian, the same as we do. We're never typing at the same time on the same page. When people ask me, like, oh, I want a video on that, I go like, what do you want me to do? Show me typing and showing someone else typing?"