average_time_in_hours_to_2_or_more_view_slow.rb

  def average_time_in_hours_to_2_or_more_view
    businesses = Businesss.where.not(date_achieved_2_views: nil)
    hours_sum = 0
    businesses.map do |business|
      hours_sum += TimeDifference.between(business.created_at, business.date_achieved_2_views).in_hours
    end
    return nil if hours_sum.blank? || businesses.count.blank?
    hours_sum / businesses.count
  end