code: function(places) {
  
        places = Math.pow(10, places || 0);
  
        if (isNaN(this["n"]) || isNaN(this["d"])) {
          return new Fraction(NaN);
        }
        return new Fraction(Math.ceil(places * this["s"] * this["n"] / this["d"]), places);
      }
docs: Calculates the ceil of a rational number
  
  Ex: new Fraction('4.(3)').ceil() => (5 / 1)