The result of your conversion between barn and cawney appears here
To convert between Barn and Cawney you have to do the following:
First divide 1E-28 / (4/3) * (0.09290304*43560) = 0.
Then multiply the amount of Barn you want to convert to Cawney, use the chart below to guide you.
Symbol: b
No description
Symbol: cawney
No description