en_tn/num/07/01.md

the heads of their ancestor's families

Here the word "heads" means "leaders." (See: rc://en/ta/man/translate/figs-metonymy)

had overseen the counting of the men

AT: "had helped Aaron and Moses to count the men" (UDB) (See: rc://en/ta/man/translate/figs-abstractnouns)

six covered carts and twelve oxen

AT: "6 covered carts and 12 oxen" (See: rc://en/ta/man/translate/translate-numbers)