Endowment insurance is one of the social insurances that the state requires enterprises and employees to pay. Among them, the unit shall pay at the rate of 18% based on the total payment of wages, and the individual shall pay at the rate of 8% based on his average monthly salary in the previous year. The base of 336 yuan paid by individuals should be 4,200 yuan, and the unit should pay 756 yuan at the ratio of 18% of 4,200 yuan.