The real power P in watts (W) is equal to the apparent power S in volt-amps (VA), times the power factor PF:
P(W) = S(VA) × PF
So watts are equal to volt-amps times the power factor.
watts = volt-amps × PF
W = VA × PF
What is the real power in watts when the apparent power is 3000 VA and the power factor is 0.8?
P = 3000VA × 0.8 = 2400W