President Trump wants to take over Greenland, although Greenland and Denmark say it’s not for sale. Jeffrey Gettleman, an international correspondent for The New York Times, visited Greenland to talk with people about what they want for their gigantic island.

David Barker, a real estate developer and former economist at the New York Fed, told The New York Times that Greenland could be worth anywhere between US$12.5 billion and US$77 billion, based on some rough math. Barker used the Virgin Islands and Alaska purchases as comparison points (the U.S. bought Alaska for US$7.2 million in 1867).