(I think 40 might actually be XL instead of four Xs, but I'm not entirely sure. I just know that Roman numerals usually follow the pattern of having numbers based on 4s and 9s written differently than you would expect.)
Oh, Brightlord Tumul! How unexpected it is to see you standing there! I didn't mean to insult your stupidity. Really, it's quite spectacular and worthy of much praise. — Wit (The Way of Kings by Brandon Sanderson)