So I understand that converting between CGS and SI units is no easy task when you look at the general form of each equation in electromagnetism, as you can't simply relate the two systems given they have different ways of looking at what is a derived unit and what is fundamental. But once you've used either system's set of equations to solve a problem, is there an easy conversion at that point (once all you've got is some number with certain dimensions sitting in front of you)? Additionally, what are we to make of two systems have completely different sorts of units for quantities like charge or current? It seems very different from the simply types of conversions between mechanical units like length (eg mile to kilometer). The equations surely tell us the same thing, but if each piece has different units in corresponding equations, isn't that a bit odd?