Changing the size of the font is one way, the hardcore way...
Navigate to
Code:
/System/Library/CoreServices/Finder.app/Contents/Resources/English.lproj
Locate the file that is called Localizable.strings and
make a copy of it and store it elsewhere on your disk before you modify anything. Open it in your favorite text editor.
I can't remember what line it is, but do a search for the word "free" and then delete it from the line that looks like it is the right one (it should be obvious and look something like "^0, ^1 free" ). Save the file.
Launch Terminal, enter the command
and you should have something like:
232.7 GB, 97.48 GB