How much lethal?

so when i was 15 yr old (male) i was around 57kg with no tolerance i use to drink like 120ml of vodka all at once 3 times in a hour i could do around 300ml in that time no hangover but once me being the idiot i was did 400ml and got a stupid hangover barley could get off the floor without wanting to throw up just wondering what is the lethal dose was lol