A man is very ill and lying in a hospital bed

The hospital calls the family to the ward The Father calls his eldest son Rob and says “you know the houses I have in Chiswick, 20 of them are yours.” The son replies, “thank you so much, Father.” The Father then calls his youngest son Harry and says. “You know the houses I have in Windsor they are yours, all 35 of them.” The son replies, ” thank you so much, Father.” Then he calls his daughter and says . “Stephanie you know the houses I have in Fulham, they are yours all 45 Of them.” The daughter replied, ” thank you, Father.” The nurse sitting in the room turns to the wife and says, “your husband must be a very wealthy man!” The wife turns around and says, “no he most definitely is not. He is a window cleaner!”