Magic Number 7 Card Trick video

I decided to do my video of me demonstrating a card trick. This card trick isn't really a trick, but mathematics at its finest. The trick finalizes with a card being called and magically appearing. To be honest, I don't know how the math works out, but all I know is the trick is 100%. In the video I wanted the cards to be clearly visible, and I think they are for the most part. The trick had nothing to do with the deck being set up, and I tried to show that before I presented the trick. I like this trick because anyone can do it, even little kids. I show this trick all the time, and no matter who the audience, they seem to be amazed. The best part about magic tricks is the faces from the audience as the trick concludes; there is no better feeling for the magician. In my video I tried to pinpoint the most important things to remember with scrolling text. The trick is pretty straight forward, but can be somewhat complicated to remember all of the small details. Now that I look back, I wish I had done the trick to someone who had never seen it to get a reaction I was speaking about before. But I'll let that mission now go on to you, as you know the magic number 7 card trick.