Zac Efron, star of the upcoming film "The Greatest Showman," invites Vogue in and answers 73 Questions. Zac tells us about his 1964 Mustang, his best celebrity impressions, and that time he swam with a wild tiger shark.

What's 73 x 42? Answer: 3,066! That's the total number of questions answered by Kendall Jenner, Selena Gomez, Taylor Swift, Michael B. Jordan, Zac Efron, Gigi Hadid, Derek Zoolander, Liza Koshy, Victoria Beckham, Daniel Radcliffe, Blake Lively and many more.