You guys are aware that you can google spell and ability average damage as listed in official material right?
https://www.dndbeyond.com/posts/177-spell-spotlight-fireball#:~:text=Fireball%20deals%20unusually%20high%20damage,of%2028%20damage%20per%20creature).
Fireball average damage is 28.

I am here to discuss a video game. Please do not try to rope me into anything other than that. Thank you.