How do you calc Armor with IronReflex?

How do you calc Armor with IronReflex?

My armor is 6176 atm. But in my calc... it should be 8733.
I calced like this.
((1580*(1+1.02))+478)*(1+1.38) =8733.648

So my calc is wrong.

Anyone tell me how do you calc armor with IronReflex?

Thanks in advance.


--Details--

<Armor & Evasion from Gears>
Evasion 1580
Armor 478

<Evasion>
64% (from Armor and Evasion Passive)
38% (from dex 193)
Total 102% (??? not sure. IronRefex thing)

<Armor>
64% (from Armor and Evasion Passive)
74% (from Armor Passive)
Total 138% (??? not sure. IronRefex thing)