A person decided to invest money at the end of each month. His initial investment amount is R2470 but thereafter, starting with the second month, he increases the amount by R141 each time. The accumulated investment after 6 years if interest is compounded at i(12) = 5.12% p.a., is? (Give your answer rounded to 2 decimal places. If you think the answer is R1012.3456, type in 1012.35)