Convert from tarea to caballeria [Spain/Peru]

Unit Definition (tarea)
The tarea is a traditional unit of land area in the Dominican Republic and some parts of Central America. The tarea is generally equal to 900 square varas, so it is the area of a square 30 varas (about 25.05 meters) on a side. In the Dominican Republic, the tarea equals about 628 square meters or 751 square yards; this is 0.0628 hectare or 0.155 acre. The Spanish word tarea means a task or job, so this unit, like many land area units, originated as the area which could be "worked" in a given time.

Unit Definition (caballeria [Spain/Peru])
The caballeria [Spain/Peru] a traditional unit of land area in Spanish speaking countries. In Spain and Peru the caballeria is equal to 60 fanegas, which is roughly 40 hectares (100 acres).