Never heard of the metabolic resting rate before. Apparently I'd need 1843 calories. Sent me down a bit of a wormhole now. Wondering how quickly I'd lose my jiggly bits if i cut out sweets and cookies from my diet.
Remember that this is just calories needed if you were to do nothing, not move at all all day, which is impossible. Every action you do will add some calories onto this. Just most peoples pottering around here and there, up and down the stairs 10/15 times a day, easily adds on hundreds more calories. Then add on exercise should you choose as well and it's suddenly quite easy to cause weight loss with minor caloric reductions.