Note 23 — Chapter II · Primitive Systems of Currency.
Reading edition
Clavigero, Hist. of Mexico, Vol. I. 386.
They counted the Cacao nuts by 8000 and to save the trouble of counting them they reckoned them by sacks, every sack being reckoned to contain 24,000. Cf. Prescott, Conquest of Mexico, Vol. I. p. 44.