Great job was is you strategies
250 + 12.5 = 262.5
262.5 is the size of family chocolate bar
If I did my math correct it should be 47. If you take 284x386 you get 109,624 (that should be the area in square feet) then take 109,624 and divide it into 2346 and you get 46.7280477408. In order to cover it you should round up to 47 bags.
The distance between the two points Is 8 points