Joe would like to build several bookcases that are different heights and widths. All will be 12 inches in depth. The bookcases will have three shelves, in addition to the bottom and the top shelves. Write a solution (one calculation algorithm) to print the number of feet (Variable: Number_Boardfeet) of 12-inch-wide boards that Joe will need to complete any given bookcase, given the generic height and width of each bookcase.