Experience gained = CrExp * 1.6^(Enh) * Mult
Where CrExp is crafting experience received if crafted 1 piece, Enh is the enhance value (so a +0 would give 1.6^0 = 1), and Mult the multiplier you get when choosing the random 5 cards.
Snapshots with random data samples from Atlantica Online (NDoors online game).
By Rossiel (Delphi) - please quote source as Rossiel@aolog.tumblr
Experience gained = CrExp * 1.6^(Enh) * Mult
Where CrExp is crafting experience received if crafted 1 piece, Enh is the enhance value (so a +0 would give 1.6^0 = 1), and Mult the multiplier you get when choosing the random 5 cards.