How to fully span right-hand div, when left div is fixed size?

How to fully span right-hand div, when left div is fixed size?

I'm having two div layouted as inline-block. I want the left div to be of
a fixed size and the right to fully span of what is left on the line - but
never move to the next line. So, to divs on the same line. One is fixed,
the other fully spans.
I prepared a JSFiddle, which is NOT what I intended, because the divs are
on seperate lines. Any CSS-expert that did this before?
http://jsfiddle.net/yT5Gc/1/