When a crack head, or junkie, is trying tofigure out much money they'll get for drugs of some stuff they are trying to pawn or sell. To see if its worth goin to cluck it...
Person 1:"what are you up to?"
Person 2: "Nothin just crackulatin these dvd's, n figure out if it'll be enough to score a stash...."
When a drug dealer uses a regular calculator to calculate the price of crack cocaine on the open market that calculator he is using is then referred to as a " Crackulator ".
"Sheet dog how much can we git fo a pound and half?"