The income of a monetary fund can be calculated based on the income per 10,000 shares.

Monetary fund income on the day = Fund shares held on the day * 10,000 income on the day / 10,000.

When an investor holds 10,000 shares of a currency fund, the income for 10,000 shares is 0.45 yuan, then the income of the currency fund that day is 10,000*045/10,000=0.45 yuan.