The result of your conversion between square mile and cawney appears here
To convert between Square Mile and Cawney you have to do the following:
First divide 0.09290304*27878400 / (4/3) * (0.09290304*43560) = 480.
Then multiply the amount of Square Mile you want to convert to Cawney, use the chart below to guide you.
Symbol: mi²
No description
Symbol: cawney
No description