Let's take this guide logo as a basis. We go from right to left. First come the seconds, then the minutes, and then the hours. The very first number is summed up, which is why it can contain a number from 1xx to 1xxx.

For example, here I am. I often did not understand how the general calculation is carried out, and how much time I spend on this drawing. Now you too can try to understand how much time you spent drawing your drawing.