Translation:There are seventy-six million people in Turkey.
Just went to Wikipedia, looks like you are right - 79,463,663 at the 2016 census. I'm not sure when they created this course though!
Avustralyalı neden Türkçe öğreniyor? Türkiye'de yaşıyor musun veya çalişyor musun? (Hope you don't mind me asking, I'm just happy I can already ask such things in Turkish :D )