‘K’ and ‘L’ started a business by investing Rs. 42,000 and Rs. 35,000, respectively. ‘L’ manages the business and for that he is entitled to receive a commission of 20% out of the total profit, while the rest of the profit is divided among them in the ratio of their investments. If at the end of the year, ‘K’ received a profit of Rs. 21,000, then find the total amount received by ‘L’ at the end of the year.