But then I was watching a stream, and at one point, 400 earth elementals with the Fire Shield destroyed more than 1000 archangels, and now I don't understand anything about the Shield of the Elements. There, the theoretical damage from the archangels was 43K, the actual damage, taking into account health and the number of opponents, was 15K, and the retaliatory damage from the shield was 350K, 8 times more than the theoretical damage and 22 times more than the actual damage. That's why I'm looking for a formula, but I haven't found it yet.
Added after 1 hour 51 minutes
I think I figured it out. There, the opponent has an artificially inflated level, around 2500, and the Magic skill. Plus, the Sphere of Fire. According to the calculator, such numbers can be obtained, since the damage at such a level increases by approximately 19 times.