How to calculate the base is based on the net value on the day of purchase confirmation. The net value is the purchase amount on the day when the purchase is confirmed, MINUS the rate and divided by the net value. Of course, the selling rate is within 7 days, the redemption rate is 1.5%, the fund is held within 7 days, and the rate is within 365 days. The selling price is based on the net value on the day when the purchase is confirmed. General net worth * dividend yield is the money actually received.