The so-called 8% interest is converted into 0.8% monthly interest. The loan is 6,543,800 yuan, calculated at the monthly interest rate of 0.8%. Interest is equal to the principal multiplied by the monthly interest rate, equal to 654.38+ ten thousand yuan multiplied by 0.8%, equal to 800 yuan.

In principle, the profit of the previous year is one percent, and the monthly profit is one thousandth.