For example, just now I compared file permissions in C.
Turns out, the permissions were 33216!
After some total confusion, with this
echo $(printf %o 33216) % 100000 | bc
I got it back to the familiar 700.
My first thought was to use units. I think units is excellent, so I guess I'm looking for units but with a tilt towards computing.
Another example of usage could be, you enter % and HTML, and you get