One guy I know - who we dont want to ask but be sure of that - makes 100k Dollars a month with mining ETH in Sweden. (ETH Price 700 so now it would be a lot more)
So he and some friends of his own a mining farm.
How do they do that? We dont want to use Google because we are sure that what you find there is scam.
Does anybody know an answer? we also have a screenshot but i m not allowed to post a picture
Under the assumption that your figures are correct, then this person is part of a sufficiently large mining farm. That's all there is to it.