Mark and Bark started a small pizza hut. They decided to work every day from 5 pm to 8pm. On Average, they get 2 customers per hour every day. they charge $25 per pack of pizza and they only sell these packs. The hiring of oven costs $50 per day, and the ingredients cost $50 per day. Other expenses are $ 25 per day. What is the probability that Mark and Bark make a profit on any given day?