The result of your conversion between acre [survey] and cong appears here
To convert between Acre [survey] and Cong you have to do the following:
First divide 0.092903412*43560 / 1000 = 4.04687263
Then multiply the amount of Acre [survey] you want to convert to Cong, use the chart below to guide you.
Symbol: ac
No description
Symbol: cong
No description