The problem is in converting weight to volume. 400g = 14.109585 oz *by weight* 14.109585 oz = 1.7636981 cups *by volume*. I hope this is close enough for you.

well with fish it is around about 13oz i found thisout by if u have a oz scale then put what ever you want to mesure and see it that way if it does not work then i dont know what will.

These ingredients will make 24 or more but oh well 400g Flour 400g Butter/Margarine 400g of Castor Sugar 4 Eggs Little bit of milk 1tsp Vanilla Essence

Find how many R's are in 1G (If you divide 4 by 1000 you get .004 per G) Multiply your answer by the G's (400) to get total R's. (.004R x 400G) I get an answer of 400G=1.6R