Elly purchases a house by paying deposits of RM20000 and paying RM2000 monthly installments for 30 years. She also received
Elly invested RM1100 each into three accounts for her daughter. Account A pays 5% compounded quarterly while Account B pays 3% simple interest per annum. Elly also pays RM150 every month in Account C that pays 6% compounded semi-annually. Determine the interest obtained from all accounts if the investment period is 57 months.