Is there a online site that does magic tricks like you guess a numer and it tells you it?

Or like magic card tricks

What is this old TV show with magic tricks from the 90s?

I believe it was on TVO. It was in a castle-like thing and the main magician was a man. He did some math related magic and he had a history section in each episode. (He once talked about measuring using feet and another time talked about the great pyramids)

It wasn’t Spellz (which TVO currently plays)

How do the “flying” magic tricks work?

very often magicians do the tricks where they can levitate and fly.
how do they do that?