Say you were calculating the trajectory of a probe on its way to one of Jupiter's moons (Europa Clipper for a real world example). Your plan is to launch from Earth, and with the help of both Earth and Mars' gravity three years later to launch the probe into Jupiter's orbit.

The calculations for this would be complex and orders of operations would absolutely matter. Would these calculations even be possible using a different order of operations? I know if we did, our equations would have to be different, I just can't begin to imagine what that would look like.

12 inches in a foot

3 feet in a yard

1760 yards in a mile

I don't see how this is multiples of 12 honestly.