Annual interest rate =6.84%, monthly interest rate = annual interest rate/12 = 0.57%;
Formula: monthly repayment amount = loan amount * monthly interest rate/1-( 1+ monthly interest rate)-repayment months.
Monthly repayment amount =1050000 * 0.57%/1-(1+0.57%)-360
Monthly repayment amount = 6,873,438+0 yuan.
Total repayment = 2,474,357,438+0 yuan.
Total interest = 1, 424,357,438+0 yuan.