Prasmul operates a bed and breakfast hotel in a resort area near Lake Toba. Depreciation on the hotel is $$60,000$ per year. Jane employs a maintenance person at an annual salary of $$41,000$ and a cleaning person at an annual salary of $$24,000.$ Real estate taxes are $$10,000$ per year. The rooms rent at an average price of $$60$ per person per night including breakfast. Other costs are laundry and cleaning service at a cost of $$10$ per person per night and the cost of food, which is $$5$ per person per night. Determine the quantity of rentals and the sales revenue Jane needs to break even using the contribution margin technique