Consider a house whose walls are 4 m high and 12 m long. Two of the walls of the house have no windows, while each of the other two walls has four wndows made of 0.6-cm-thick glass (k=0.78 W/m*C), 1.0 m x1.5 m in size. The walls are certified to have an R-value of 3.3 (i.e., an L/k value of 3.3 m2*C/W). Disregarding any direct radiation gain or loss through the windows and taking the heat transfer to be 11 and 22 W/m2*C, respectively, determine the ratio of the heat transfer through the walls with and without windows.