How much can Guangxi Beiliu 1200 support the elderly 15 years later?

Guangxi Beiliu pays 1.200 yuan's pension fee every month, and will receive 2300 yuan after 1.5 years. According to relevant information, you can get a pension of 2,300 yuan by paying social security 1200 every month for 15 years. The social insurance fee is 20% of the average social wage, 12% is paid as a whole, and 8% is credited to your personal account.