Using SASS, How can I escape the slash character in a font declaration?

I'm writing a font declaration with short-hand syntax, and I'm using SASS. I'd like to escape the '/' character to avoid SASS makes the divition operation.

$fontSize: 14px;
$lineHeight: 16px;
$fontName: Arial;

body
{
    font: $fontSize/$lineHeight $fontName;
}

This gets compiled to:

font: 0.875 Arial;

What I want to get is something like:

font: 14px/16px Arial;

Any ideas?