How do I calculate the coordinates of an end city in Minecraft?

Hi, I read in the Minecraft Wiki that you can calculate a https://minecraft.fandom.com/de/wiki/Endsiedlung, but I don't check this formula.

Can anyone help me and maybe explain the formula?

This is the formula in the wiki: ([0… 8] + - n * 20)

It has to be a multiple of 20 in the chunk coordinates. I'm not so sure though.

There's an example underneath.

For n you have to insert an integer.

So it could be at 20-28, at 40-48, 60-68 …

And that for x and z.

So you could stand in chunk 24 in one direction, and then walk in the other to find an end city.