How do I delete users from my MongoDB on my meteor.js web application

I developed a web app using meteor.js and I can view my users on my command prompt, but how do I delete users?

I tried

meteor mongo myapp.meteor.com db.users.remove({_id:<user id>});

but I got an error

SyntaxError: Unexpected token <

I tried it without the <>

but I also got an error

SyntaxError: Unexpected token ILLEGAL

Then, I tried

db.users.remove('USER_ID');

but I got this error -_-

SyntaxError: Unexpected token ILLEGAL

Could anyone give me any guidance? And just out of curiosity, is there a website where I can view my MongoDB for my meteor web app and delete users from there?