zenkapo = how much (adverb, interrogative) (some things Google found for "zenkapo": a very rare term; user names; "Zenk APO" can refer to someone named Zenk at a APO (Army Post Office) address)
Word derivation for "how much" :
Basque = zenbat, Finnish = kuinka paljon (or paljonko)
Miresua = zenkapo
This is the word asking what is the cost/price, what quantity. For quantity, it's used with uncountable nouns.