Darius is considering renting an apartment or buying a house. The apartment he likes is $1,175 per month. The house would have a mortgage of $1,200. If the mortgage lasts for 20 years, how much money will he spend on either the apartment or the house in those 20 years? If Darius were to buy the house, how long would it take for him to start saving money after he pays it off compared to if he chose to rent the apartment all that time?