Currently, the annual interest rate for provident loans over 5 years is 3.87%, and the monthly interest rate is 3.87%/12=0.3225%

300,000 yuan, 30 years (360 months):< /p>

Monthly repayment amount=[300000*0.3225%*(1+0.3225%)^360]/[(1+0.3225%)^360-1]=1049.85 yuan

Note:^360 is 360th power