Need the help of Math Geniuses! I'm trying to find a formula where the output is the ideal property price given the rent. In other words the rent is the variable and the output is the ideal property's price. Assuming that it has to give 1,000 NET profit per month. After paying for service charges (say another 3,000 per month) and the mortgage. Clearly the mortgage duration is NOT a variable. Let's assume it is for 20 years. And the interest rate is also not optional. Let's say it's 3.55% for this exercise. I can't work out this formula for the life of me. Can you please help?