I mean i want to understand not that the problem doesnt exist. If the price is "0.00023" per unit and someone uses "213.34" units I feed those strings into a m

I mean i want to understand not that the problem doesnt exist. If the price is "0.00023" per unit and someone uses "213.34" units I feed those strings into a multiplication function that returns the correct string 100% of the time. That much i understand. I dont get how that category of problems is addressed by the solution described. What i also understand is that you inevtably get to deal with accountants or other finance people. Working in a format they understand is not optional. They will have you transform whatever you have into that anyway. I learn not to wonder why but maybe i should.