Draco was like a non-stop machine of work as he made potion after potion of the same thing. He wasn't even planning to sell them anymore, but accumulate them for the Tradeskill players he would soon be recruiting, as well as his future NPC Tradeskill clan faction, the natives of this Treasury.
His output per day was precisely 1,450. Even though one might think it should be 1,440, there were times where he would end up with two successful collections for one cauldron of potions.
Unlike Common, Uncommon or Rare potions, Epic potions could not be collected as more than 1 per batch. Of course, with his overwhelming success rate and his new Grandmaster technique, Draco was able to do that every now and then if he hit those RNG throws just right.
Ultimately, it took Draco five days to reach level 80 in Alchemy. He originally stipulated that it would take four days, but it ended up overshooting the amount because of the repetitivity of his craft.