JavaScript:

var ________ = 0.023809523809523808, ____ = 1, ___ = 0, __ = 0, _ = 1;

       __ -           ___
     /_  |0        //     \\
    /_/   0     //          \\
   /_/_  |0                //
  /_/_   |0              //
 /_/____ |_           //
/________|0        //
         |0     //______________

The output is:

42

Not bad, eh? :)

For the people who don't understand, it actually evaluates the following:

__ - ___ / _ | 0 / _ / 0 / _ / _ | 0 / _ / _ | 0 / _ / ____ | _ / ________ | 0 | 0