Suppose you take out a 20-year mortgage for a house that costs $336,164. Assume the following: The annual interest rate on the mortgage is 3%. The bank requires a minimum down payment of 14% at the time of the loan. The annual property tax Is 2.1% of the cost of the house. The annual homeowner's Insurance is 1.2% of the cost of the house. The monthly PMI is $71 Your other long-term debts require payments of S872 per month. If you make the minimum down payment, what is the minimum gross monthly salary you must earn in order to satisfy the 28% rule and the 36% rule simultaneously?