Microsoft lends $10,000,000 for small projects in rural areas of India. The loan has to be refunded at 8.5% interest rate compounded annually. Repayment should be made in such a way that an amount A must be paid for the first 8 years, amount 3A for next 5 years and amount 5A for remaining years, keeping the interest rate 8.5%. Total time period for which the loan is allotted is 20 years. Find the value of A and draw cash flow diagram.