ChatGPT 4 can do 3-digit multiplication
statmodeling.stat.columbia.edu
statmodeling.stat.columbia.edu
And when you consider the amount of compute an LLM uses just to appear to add 1+1, it is utterly bizarre to do it that way.
So I'm very unimpressed by its limited mathematical prowess. There are far better ways to do it, and no reason for it not to use them.