Question

I saw speed freak comment using this. Lets say neither were EV trained at all, what would be the total damage it would do on the fifth turn?

Answer 1

481,266,036 damage max. Although technically it would do only as much as the HP of Ledyba. See Mew's answer http://pokemondb.net/pokebase/51228/what-is-the-most-amount-damage-any-pokemon-could-do-to-another