How to use division in stylesheet layouts

[chh51]

I want to use a division operator in my layout statement in a .css file,

#sbButtonLR {
  layout:           size( sbRoot.width/3, @buttonHeight ),right( parent.width -10 ), bottom( sbGuide.bottom );
}

Subtraction works fine, but not clear how to multiply or divide

#sbButtonUR {
  layout:           size( sbRoot.width-200, @buttonHeight ),right( parent.width -10 ), top( sbGuide.top );
}

For a working example of this bug see the sample program InterfaCSS-Example on GitHub.

[chh51]

After looking at code in more detail, this is not worth the effort to implement. There are other existing ways to solve the problem.