Teen Auto Insurance??

I am just wondering what the teen drivers or parents of teen drives pay monthly or however you pay for insurance once the teen gets their license? I know there are alot of factors that contribute to how much a teen pays for insuracne but I am just curious. So basically how old are you?...and basically just how much does you or your teen pay for insurance, if they have a car what type? or if you are a parent, are they added on your policy, and still how much do you pay for insurance? Thanks :)