3.33% interest. How much is the interest in January?
33.3 yuan. If the interest rate of 3.33‰ is monthly interest, the monthly interest rate of the loan is 33.3 yuan and the annual interest rate is 399.6 yuan. That is, 3% annual interest rate = principal * annual interest rate * years 65438+ interest for one thousand years = 10000 * 3% * 1 = 300 yuan10000 * 3% *165438.