so question:
lets say i have 1000 default attack
a) 1000 + Drannik40% =1400 + Foci 5% crimson crap +10% = 1400 +15%
b) 1000 = +Drannik 40% +foci 5% +crimson crap +10% =1000 + 55%

bit edited for less confusion

I don't know what your equations are trying to say, but it will take your final NPC attack that you have right now and multiply it by 1.4, so your NPC attack would be 1000*1.4*1.05 etc.

if i am no wrong than my total attack power never changes with same artis (and its dosnt matters in which sequence i use them,(which should affect total output))

Yes, it doesn't matter what order, it doesn't matter in what order you multiply things.

Base attack multiplied by (with buffs + drannik + npcatt modules):

2.58 (no crux amp)
2.84 (crux amp)

thats what i was after! thanks