Out of 10 employees in an office 5 drink 2 cups of coffee per day, 3 drinks 3 cups of hot chocolate per day and 2 drink 5 cups of tea per day. If it is known that on an average to make a cup of coffee 100 ml of milk is used, to make a cup of hot chocolate 180 ml of milk is used and to make a cup of tea 60 ml milk is used, find the monthly expenditure on milk of the company, if milk is 46 rupees per liter.