You are considering to take a 2 days staycation to Lantau Island during the weekend.You have already bought a round trip ferry ticket at $146, which is fully refundable.To go to Lantau Island, you will have to apply for a leave from the part-time job where you normally work 10-hours a day at $16 per hour.You will live in your friend's place so you don't have to spend anything on accommodation.You currently live in a hotel with a daily rent of $306 that is non-refundable and typically pay $76 per day for food.You estimated that you need to pay a total of $272 for food during the staycation.Assuming there are no other costs, what is the total opportunity cost of the staycation for you?