How many Mu is 25000 square meters?

How many Mu is 25000 square meters?

1 meter = 3 feet,
1 Zhang = 10 feet = 10 / 3 meters,
1 mu = 60 square feet = 60 * (10 / 3) ^ 2 square meters = 2000 / 3 square meters,
25000 square meters = 25000 / (2000 / 3) Mu = 25000 * 3 / 2000 mu = 37.5 Mu