The result of your conversion between cawney and fanega appears here
To convert between Cawney and Fanega you have to do the following:
First divide (4/3) * (0.09290304*43560) / 6430 = 0.83916152
Then multiply the amount of Cawney you want to convert to Fanega, use the chart below to guide you.
Symbol: cawney
No description
Symbol: fanega
No description