Please solve this manually not un excel I need the actual solution

4. The purchase price of a property, land and improvement, was Php 16,250,000. You put 20% down payment and the rest was financed. The mortgage is a 30 year loan at 6.5% principal-interest payment. Taxes and insurance at the time of purchase are Php 180,000 each year. The vacancy rate is 8% while the repair expenses averaged is Php 85,000 every year. You spend annually about Php 20,000 for miscellaneous and advertising costs. You manage the property yourself . Determine the monthly cash flow from 30 unit apartment with monthly rent of Php 6500 per unit. Was it a good investment