I start mining 21 coins with 800gh/s on 27/1/2014 and have only 0.003 21 coin.
Do you think that is possible mining 0.01 21 coin in few days? Maybe with too power hashing (3-4 th/s)
Mate, honestly, simple math. So difficult to calculate?
If you mine now with 800Gh and you want to know how much coin you could earn with 4Th just multiplicate 800x5 and you got the sum for 4Th. So with this setup you gonna mine probably 0.015 (0.003x5) coins in the same time. (Depend on difficult increase lesser)