The Cheese Cake Factory, a chain restaurant, has determined a probability distribution for the number of whole cheesecakes that they sell in a given day at a specific franchise. The distribution is as follows:
Number sold in a day 0 5 10 15 20
Probability (Number sold) 0.19 0.07 0.2 0.09 0.45
Find the number of cheesecakes that this restaurant expects to sell on any given day.