The result of your conversion between ngarn and square thou appears here
To convert between Ngarn and Square Thou you have to do the following:
First divide 400 / 6.4516E-10 = 620001240002.47998047
Then multiply the amount of Ngarn you want to convert to Square Thou, use the chart below to guide you.
Symbol: ngarn
No description
Symbol: sq thou
No description