Annual interest rate =24%, monthly interest rate = annual interest rate/12=2%.

Formula Monthly repayment amount = loan amount * monthly interest rate /[ 1-( 1+ monthly interest rate)-repayment months]

Monthly repayment amount = 40000 * 2%/[1-(1+2%)-36]

Monthly repayment amount = 1, 569.38+0 yuan.

Total repayment = 56,495,438+0 yuan.

Total interest = 16495438+0 yuan.

Results:

Monthly repayment of this loan 1, 569.38+0 yuan; The total repayment amount is 56,495.3438+0 yuan; Total interest16,495.38+0 yuan. ?