One-twelfth used in a sentence

One-twelfth in a sentence as a noun

That's the "one-twelfth" part, so the whole thought becomes "one plus [that image]".

The krone, at 25 Swiss centimes the previous Christmas, was now quoted at one-twelfth of a centime.

I think he meant he hopes to eventually get some money out of them for stealing his design, and that just one-twelfth of their recent sale price would be satisfactory.