If you had a seemless education, you still might not know your times table's. I don't. I'm terrible at remembering rote facts like times table's, years, names, spelling etc. But you know what? I still did great in school and even successfully washed out of a PhD program (turns out I hate failure and writing). I'm even pretty decent in math (took up to Calc 2 in college) and my favorite puzzle app is Nerdle which is basically Wordle but algebra instead. Do I need to look at a calculator every 2 seconds? Absolutely, but while I can't work out 34-27 quickly in my head, I can work through the logic behind why that's the right equation to use and I'd argue being able to understand the logic behind what you're looking to do is often more important than 2nd grade math.