There is nothing hidden in this step. Every letter carries a fixed value, the values are added, and the total is reduced by adding its own digits until one digit is left. Spaces, ampersands, hyphens and full stops carry nothing at all, and capitals make no difference.
The reduction, written out
In the Pythagorean column the letters add to 28. Reduce that: 2 + 8 = 10, then 1 + 0 = 1. The name number is 1. In the Chaldean column the same nine letters add to 24, and 2 + 4 = 6. Same brand, same spelling, two different answers — because the two systems disagree about R, O and S, not because one of them made a mistake.
Vowels and consonants add back to the total
The vowels alone — A, O, A, A — come to 9. The consonants R, M, L, B and S come to 19, which reduces to 1. And 9 + 19 is 28, the full total. That is the check you can run on any result this page gives you: the vowel and consonant sums must reconstruct the name number before reduction.
Why Pvt Ltd is left out
Add PVT LTD to the same example and the Pythagorean total moves from 28 to 50, which reduces to 5 instead of 1. A registration suffix is paperwork, not a brand — nobody says it in a sales call — so it is conventionally excluded. If your suffix genuinely is spoken as part of the name, calculate both and say which one you used.
Pick one system and stay with it
Running a name in both is informative. Running it in both and then keeping whichever produced the friendlier digit is not analysis, it is shopping for an answer. Decide the system before you look at the result, the way you would fix a metric before running a test.