We have 1.5 million enrollments, 6 million quizzes in the 15 classes that have launched so far have been submitted, and 14 million videos have been viewed.
Es gab 1.5 Millionen Anmeldungen, und in den 15 angebotenen Kursen  wurden bisher 6 Millionen Quizze eingereicht und 14 Millionen Videos angeschaut.