Take 2 yuan beer in the market as an example. Dealers earn 50 points, leaving 1, 5 yuan, agents 20 points, 1 and 3 yuan, salesmen 1-2 points, 1,1,2 yuan, bottles 3 points, 8. The manufacturer's scrap cost should be 5-7 rounds. What is the ex-factory price of a bottle of beer?