%attack, stacks with buffs/pots or not?

actually, i found this while being suspended on basilmarket, i made a huge rant/wtp are you all talking about rant and waited until unban to post it, pictures and everything, let me go look for it, i'll edit this post.

direct copy pasta from the rant i saved, so if it sounds like i am explaining it to a 10 year old, it's because of that hahaha... god i nerdraged hard that time

 Spoiler

simple enough to prove, i am a warrior, i have access to warrior weapons, and i am a DrK, so i have access to +60w.attk from buffs (this will be adressed later on.) i have currently these stats:
PICTURE
STR:1225
DEX:106
W.ATTK: 44 not counting the weapon, and +9 blessings of the fairy, so 53 total
weapon multiplier: 1.49

this is extremely important because all of you guys seem to forget that decimals exist, maple doesn't show them, so they have to be rounded somewhere, as can be seen from my previous examples, it seems to be rounded AFTER all the calculations, if you think i am wrong, or think it happens at some other point, BY ALL MEANS, SAY SO, BUT PROVIDE EVIDENCE TOO.
now! time to get serious and add 6% attack to the equation! and for that, my trusty machlear, stats are 6% attack, 3% total damage, and 111 w.attk so let's grab the previous formula again:
Max damage = Weapon Multiplier * (4*mainStat + secondaryStat) * (Attack/100)
so... attack 6% eh...? that means 1.06multiplier, so new formula!
Max damage = Weapon Multiplier * (4*mainStat + secondaryStat) * (Attack*1.06/100)
let's see what happens then!
Max damage = 1.49 * (4*1225 + 106) * ([111+53]*1.06/100)
Max damage = (7458.94)*(164*1.06/100)
Max damage = (7458.94)*(173.84/100
Max damage = (7458.94)*(1.7384)
Max damage = 12966.621296 (rounds up to 12967)

oh cool, it mat-wait, no, it doesn't match! i was as stumped as you guys, but then this came to me, we have %attack, and %total damage, what if attack was calculated and rounded before even getting into the damage formula? (bold part)
i followed this train of thought, which led me here:
total attack: 53+111
total attack: 164
now, let's add the potential
total attack: 164*1.06
total attack: 173.84 this rounded up gives: 174 w.attk, let's try with this number instead

Max damage = (7458.94)*(174/100
Max damage = (7458.94)*(1.74)
Max damage = 12978.5556 (rounds to 12979)
great, now we went further away from what we wanted, so that can't be the answer, let's try instead rounding DOWN
total attack: 164*1.06
total attack: 173.84 rounds down to 173 attack, and let's replace it in the formula from before:
Max damage = (7458.94)*(173/100
Max damage = (7458.94)*(1.73)
Max damage = 12903.9662 which gets round up to 12904

LOOK AT THAT, PERFECT MATCH! however, that was a lot of "implyings" we can't have that at math, you don't imply at math, in such cases such as this one, we must try different approaches! unfortunately, i only have one machlear. luckily for you, i did this testing already, so i know the following is correct, and i will prove so next, this is what i say is correct:
Buffs to w.attk do get multiplied by %attack potential
%attack potential is not calculated in the damage formula, but before, in a separate one
Attack is rounded down (floored) before being put in the damage formula
result from the damage formula gets rounded to the nearest digit
i will now procceed to prove these all at the same time, i will cast my beholder's hex, which is +35 w.attk and dragon's blood, which is +25 attack, giving a total of +60attack, this is the result:
17678 maximum damage
that's what we aim for, now, as i said, let's calculate attack first:
53 from equips plus blessing
25 from dragon's blood
35 from hex
111 from the machlear
total of 224 w.attk, but we still need to add the 1.06 multiplier and round down, before we can put it in our damage formula, so here goes:
224*1.06
237.44 ->round down-> 237
so 237 is our new value to be placed in the attack field, note, buffs were also put under the potential of 6%, so, again the same-o formula:
Max damage = Weapon Multiplier * (4*mainStat + secondaryStat) * (Attack/100)
we already calculated potential, so we don't need againwe replace and...
Max damage = 1.49 * (4*1225 + 106) * (237/100)
Max damage = (7458.94)*(2.37)
Max damage = 17677.6878 which gets rounded to the nearest number 17678

eeh, dunno if i needed to add the rounding down of w.attk, but wth, threw it all in there