<Ul> <Li> Mountain View, California </Li> </Ul> <Li> Mountain View, California </Li> <Tr> <Th> Services </Th> <Td> E-learning, Education </Td> </Tr> <Tr> <Th> Official languages </Th> <Td> English, 5 official website translations, ~ 20,000 closed - captioned videos </Td> </Tr>

How many videos are there on khan academy