With just two more seasons left before the show ends for good in 2018, HBO’s Game of Thrones is getting ready to conclude the battle for the Iron Throne.

Season six ended with the critic and fan-pleasing shot of Daenerys Targaryen’s armada setting sail for Westeros, her great dragons flying above and casting their impressive shadows on the waves.

Clearly the dragons are going to play a big part in the forthcoming, and undoubtably bloody, battle for supremacy but the guys at shadestation.co.uk have been wondering just what it takes to keep these airborne super weapons battle-ready.

Taking Drogon as an example, they’ve crunched the numbers to see just how much it costs to keep a dragon’s tummy full of sheep: