You could bake something at 420 Celsius too, assuming your okay with charcoal as the end product

you can also bake things at 420C if you're not a coward about this (like proper thin pizza) (maybe it's a bit too high but you get the idea)

You can make the temperature dial of an oven have matching degrees of rotation and degrees Celcius.

Turn the dial to point straight down to bake at 180°

Turn it 3/4 of the way to cook a pizza at 270°