before I did what I did, I tried to do as you did and it took me 10 minutes.... I preferred to illustrate with logic (apparently not enough because he did not understand). surely you are very intelligent and so based on the numbers you can immediately identify the location of the symbol in question, but in my opinion the video became even more confusing and I risked exceeding the 10 mb that the site allows.
However, I don't understand your debate about how I found the solution to this simple puzzle. You would have been more elegant to illustrate a simpler method to those in need, instead of being provocative.