Most people aren't capable of understanding numbers: https://politifact.com/factchecks/2020/mar/06/msnbc/bad-math.... You can't educate them to do it, any more than you can educate your average person to be able to reliably hit three pointers. It's a physical limitation.

That's why socialization is so important. You can't get voters to understand the difference between billions and trillions or put anything in context when the numbers get that big. All you can do is socialize them from an early age to have directionally correct gut feelings like, "there's no such thing as a free lunch" or "saving is good."