3. Four years ago, you took out a 10-year mortgage of 5,000,000 baht from Bangkok Bank to buy a new house with an annual interest rate of 12% and equal annual repayments. After making payments for four years, interest rate in the market has significantly dropped and you are offered by Siam Commercial Bank to refinance the outstanding loan at a lower interest rate over the remaining six years with equal payment. Calculate the annual payment with Bangkok Bank. *