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.
ⵍⴰ ⵏⵙⵙⵓⴹⵓⵏ ⵜⵉⵙⵔⴰⴳⵉⵏ ⵙ ⵓⵙⵓⵜⴳ ⵏ ⵜⵖⵣⵉ ⵜⴰⵏⴰⵎⵎⴰⵙⵜ ⵏ ⴽⵓ ⴰⵙⵓⵙⵔ, ⵉⵍⵎⵎⴰ ⵏⵡⵜ ⵓⵟⵟⵓⵏ ⴰ ⵅⴼ ⵡⵓⵟⵟⵓⵏ ⵉⵎⵎⵓⵜⵜⵔⵏ ⵏ ⵉⵙⵓⵙⴰⵔ ⴳ ⵜⵓⵜⵍⴰⵢⵉⵏ ⴰⴽⴽⵯ.