We calculate hours by estimating the average length of each recording, and then multiplying that number by the total number of recordings across all languages.
Ri vhala dzi awara nga u angaredza tshikhala tsha zwiṅwe na zwiṅwe zwo rekhodiwaho, nahone ra andisa yeneyo nomboro nga ṱhanganyeḽo ya zwoṱhe zwo rekhodiwaho nga nyambo dzoṱhe.