Yes! You're approaching it properly. Think about why I said 'finger' for 'numbers'.
Wow. Thank you for making the video!
For those who want to just enjoy the atmosphere of the game or are having really trouble solving the quiz, I've added a walkthrough with more direct instructions within the hint.
'x.txt' in Hint.zip means a hint, and 'x_w.txt' gives a more direct hint.
I hope this will help your next play :D