Floating point numbers are numbers in scientific notation for computers. I don't see people without computers doing finance calculations in scientific notation.

Floating point numbers are numbers in scientific notation for computers. I don't see people without computers doing finance calculations in scientific notation. It's not natural and error happens because of this. Floating point numbers were not created to represent numbers which could be non-integers. They were created to represent numbers in scientific notation. Very useful for physics and scientific calculations, but not in finance domains.