I've been impressed with https://myninja.ai/

You have to be able to frame the question so that you can get a result.  It's been excellent at math, creating a route across the country and giving a script for an Excel macro.

Rather than spending time writing my own macro or trying to figure it out, I framed a problem to this AI and got an immediate answer that was easy to copy and paste into Excel.  I've tried it for some other math problems and it came up with the same answers as I did.

It's fast, it's free, it's easy.