divide by zero

class Fixnum
  alias_method :_div, :/
  def /(a)
    if a == 0
    	0
    else
      _div a
    end
  end
end

puts "9 / 2 = %f" % (9 / 2).to_f
puts "9 / 0 = %f" % (9 / 0).to_f