How much does it cost to support the elderly in Shanghai for one year?

Shanghai pays one-year pension as follows.

According to the social security network, the old-age insurance for urban and rural residents in Shanghai is divided into 12 payment grades, ranging from 500 yuan to 3,300 yuan. The insured can choose different grades to participate in endowment insurance according to their own economic situation. If the payment grade is 1500 yuan, the total payment of the insured in 15 years is 15 * 1500 yuan = 22,500 yuan. The upper limit of Shanghai employee pension insurance payment base is 3375 yuan/month, and the lower limit is 500 yuan/month.