I have had problems with math since forever.
When I was younger calculators had just come out and cost several hundred dollars
We were banned from using them at school because the disadvantaged students might not be able to have access.
Anyway you could buy cheap basic plastic slide rules, or even circle things at the drug store for under a dollar so I got one of those, but I was banned from using that cause reasons ?
anyway years later HP made calculators that were not polish. I used and still use those. I cannot easily use a calculator today, let alone figure out how they can teach you to do basic math from left to right.
I remember calculators locked up in glass cases at the store and my dad shopping for one. My parents explained they were something new and very expensive. Probably early '70s.