Convert from bovate to ngarn

Unit Definition (bovate)
The Bovate is an old English unit of land area equal to 1/8 hide. This was roughly 15 acres or 6 hectares. The word comes from the Latin bovis, an ox, indicating that the bovate was an area that could be farmed with the help of one ox.

Unit Definition (ngarn)
The ngarn is a unit of land area in Thailand. The ngarn equals 1/4 rai, 100 talangwah (tw), or exactly 400 square meters (478.396 square yards or just under 0.1 acre).