The result of your conversion between rai and cawney appears here
To convert between Rai and Cawney you have to do the following:
First divide 1600 / (4/3) * (0.09290304*43560) = 0.29652646
Then multiply the amount of Rai you want to convert to Cawney, use the chart below to guide you.
Symbol: rai
No description
Symbol: cawney
No description