How to calculate the budget for 300 flat rents and 1 flat 8 yuan property 3.5?

300 flat rent 1 flat 8 yuan property 3.5 budget 100800 yuan. According to the information of relevant platforms, the calculation formula of residential property fee is mainly to multiply the area by the charging standard of residential property fee, and then multiply it by 12 months, which is the annual property fee. Therefore, renting 300 bungalows and leveling 8 yuan property for 3.5 years will cost 300 * 8 *12 * 3.5 =100800 yuan.