The result of your conversion between tarea and cawney appears here
To convert between Tarea and Cawney you have to do the following:
First divide 628.8 / (4/3) * (0.09290304*43560) = 0.1165349
Then multiply the amount of Tarea you want to convert to Cawney, use the chart below to guide you.
Symbol: tarea
No description
Symbol: cawney
No description