Amit borrows Rs. (9x + 1500) at an annual simple interest rate of 16.66% for 2 years. Immediately, he invests the borrowed sum at an annual simple interest rate of 20% for 2 years, gains Rs. (x - 300) each year. How much interest would Amit receive if he had instead invested the same amount at an annual compound interest rate of 10% for 2 years?