Based on the Gemini release it’s hard to take what Google claims at face value.
Specifically just that the release was a bit awkward and had some problems? I've found the latest model releases to be very good compared to other frontier models.
Gemini is fast food - it’s not supposed to be the best.
https://blogs.ucl.ac.uk/pcph-blog/2018/01/23/google-flu-tren...
Nobel winning physicists can definitely perform arithmetic.
"Do not worry about your difficulties in mathematics, I assure you that mine are greater" - Albert Einstein