There are 3,798,237 washable windows in Seattle. @1$ a window I would charge 3,798,237. if i get a exclusive lease I might charge 90cents a window. Considering there are so many, I might license the operation off to partners as well. So i might end up getting around 35-40% of the 3,798,237. Charges vary though and I charge more in the winter. When would you want me to start?
Next time, ask stupid interviewers to buzz off.