The total loan is 630,000 yuan.

Repayment months: 360 months

The monthly repayment is 3736.76 yuan.

The total interest paid is 765,438+05,233.60 yuan.

The total principal and interest is 65,438+0,345,233.60 yuan.

2. Equal principal repayment:

The total loan is 630,000 yuan.

Repayment months: 360 months

The repayment in the first month is 4847.50 yuan.

Decreasing monthly: 8.60 yuan

The total interest paid is 559,098.75 yuan.

Total principal and interest 1,189,098.75 yuan.