In a business, Belal invests half the amount invested by Aman. After 6 months from the start of the business, Nazma joins the business with an amount equal to twice of Belal's investment. After 8 months from the start of the business Belal withdraws completely from the business. If at the end of the year,  Nazma's share in the profit was Tk. 2460, what was the total profit received that year?