A person requests a mortgage loan for $400,000 with an annual interest of 24% with monthly capitalization, to be paid in 60 equal monthly installments. The first payment is made one month after making the deal. Just after paying the 24th monthly payment, the interest on the loan decreases to 18% per year compounded monthly and with the new interest you pay another 24 monthly payments. After paying the monthly installment 48, the interest returns to 24% per year with monthly capitalization. Calculate the value of each of the last 12 monthly installments that must be paid with an interest of 24% per year, compounded monthly, to pay off the debt in full.