> learning the algorithm from this description and applying it correctly is interesting...
I find even more interesting that ChatGPT made mistakes, but it made them in almost a human-like way: it said
(1.1728 - 1)^2/2 = 0.0276
when in reality it is 0.0149. The mistake is not big though (about 0.012) so the final result is not impacted by much.
Finally, the last statement ("the exact value of 5.4553") is simply bull. The exact value is 5.4577.