Average monthly expenditure of 'P' and 'R' together is Rs. 6932. Monthly expenditure of 'P' is 40% more than his monthly saving. Monthly income of 'Q' is 4.166% more than that of 'P' while 'Q' saves 68% of his monthly income. If the monthly saving of 'R' is 15% more than that of 'Q' and the ratio of the monthly expenditure to monthly saving of 'R' is 3 : 2 respectively then find the annual expenditure of 'R'?