The interest rate is 10%, which generally refers to the seven-day annualized rate of return. That is, if you invest 1,000 yuan, you will get 1,100 yuan after one year, and your income is 100 yuan. 100 yuan divided by 365 equals your daily income of 0.27 yuan, and the period of one month is 0.27x30, which equals your monthly income of 8.22 yuan. So in this investment project, if you invest 1,000, you will receive 1,008.22 yuan after one month.

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