The result of your conversion between square thou and cawney appears here
To convert between Square Thou and Cawney you have to do the following:
First divide 6.4516E-10 / (4/3) * (0.09290304*43560) = 0.
Then multiply the amount of Square Thou you want to convert to Cawney, use the chart below to guide you.
Symbol: sq thou
No description
Symbol: cawney
No description