It would be 592,800 Gh, 593 Th, or 0.6Ph at 282mh/s a chip.
Why would they be running at 282mh/s?
I did mix up PH/s and TH/s, though. The current network hashrate is 370TH/s, so it would still be twice the current hashrate. Obviously, they could not currently be hashing.
Not all of them no. However ,those chips have been available to orders in China for weeks now (no customs to go through). It is safe to assume that a lot of them have shown up in the hash rate.