The face value of the money fund remains unchanged at 1 yuan, and the fund manager announces the "seven-day annualized rate of return" and "income per 10,000 shares" of the fund every day. The 7-day annualized rate of return is the annual rate of return converted from the income of the last 7 days (including holidays), and every 10,000 income of the fund is the actual income that can be obtained on the day of holding 10000 yuan.

Without considering the compound interest income, the calculation formula of fund income is: today's income = fund share × money fund's today's income/10000.