The result of your conversion between ngarn and cawney appears here
To convert between Ngarn and Cawney you have to do the following:
First divide 400 / (4/3) * (0.09290304*43560) = 0.07413161
Then multiply the amount of Ngarn you want to convert to Cawney, use the chart below to guide you.
Symbol: ngarn
No description
Symbol: cawney
No description