The annual interest is 654.38 million yuan and the interest rate is 2% 8, so the total interest for one year is 654.38 million× 2% 8 = 280 yuan.

The principal of 654.38 million yuan multiplied by the interest rate of 2.8% is 280 yuan's interest, that is, according to the principal of 654.38 million yuan per year, 280 yuan's interest income can be obtained every year.