The price is calculated according to the quantity you buy. If you go to 200 yuan every month, deduct 3 yuan every month at the rate of 1.5%, and the remaining 197 yuan is the share of the fund's net subscription of the previous day. For example, the net value of the fund was 0.85 yuan the day before the deduction, and you can get 197/0.85=23 1.76 copies in the current month. These are all calculated automatically by the computer. You just need to understand this truth.