The loan is 270,000 yuan, with a term of 25 years and an interest rate of 3.43%. According to the repayment method of matching principal and interest, the total interest is 132470.56 yuan, the total repayment amount is 402470.56 yuan, and the monthly repayment amount is 134 1.57 yuan.

I hope my reply can help you, and I wish you success in your work!