How are IV/EV and Nature calculated all together in order?

Question

(Original Stat+EV+IV) x nature?
Or do you multiply with nature first then add EV and IV?

So if you have original attack stat points of 100,
and 31 Atk IV, 252Atk EV and Adamant nature,
what would the final attack stat points be?

Answer 1

It's:

( Original stat + EVs + IVs ) x 1.1

I don't know if you mean 100 base or 100 Atk, but I'll do both:

100 base:
( 201 + 63 + 31 ) x 1.1 = 328.9 -> 328

100 stat points with the 31 IVs
( 69 + 63 + 31 ) x 1.1 = 179.3 -> 179

100 stat points without 31 IVs
( 100 + 63 + 31 ) x 1.1 = 213.4 -> 213