How much is the management fee for the underground garage in Century Harbor of Zhengshang Institute?

A friend just bought an ordinary underground parking space in Zhongzhou City of Zhengshang Institute, with children's parking space 120 yuan/month, one year 1440 yuan; Ordinary parking spaces are in 80 yuan/month and in 960 yuan for one year. It is adjusted once a year, and the amplitude modulation is 10% of the previous year.

Remember to increase 10% every year.

In other words, if you spend 10 million parking spaces now, it will cost about 25,000 yuan/year in 60 years.

FYI