Amit started a business with an investment of Rs. 16,000. After 2 months Bimal joins in with 5/8 of the amount that Amit invested, and Amit withdraws Rs. 4,000. After 2 more months, Chetan joins with Rs. 12,000 and Amit again withdraw Rs. 2,000. After a year, If Chetan received Rs. 3,120 as his share then what was the total profit?