Convert from virgate to tatami

Unit Definition (virgate)
The virgate is an old English unit of land area equal to 1/4 hide. This is roughly 30 acres or 12 hectares. The virgate was also called the yardland or yard of land.

Unit Definition (tatami)
The tatami is a Japanese unit of area equal to the area of a traditional tatami mat, 0.5 ken by 1 ken or about 90 centimeters by 180 centimeters (roughly 1.62 square meters or 17.5 square feet). This unit, used especially for measuring the area of rooms in houses and apartments, is also called the jo.