Viewport Custom Scale Additional Scales

[trashcan]

Trying to figure out Viewport Custom Scales

 

If 1'=1' the Custom Scale is "12"

If 1/32"=1' the custom scale is "384"

 

Then if 1/64 = 12x64, the scale would be "768"

Then if 1/48 = 12x48, the scale would be "576"

 

Cool, that make sense. But, the scale in the viewport label reads as "768", not 1/64. It would be great to see that as a fraction.