1. Matching principal and interest repayment method:

The total loan is 600,000 yuan.

Number of repayment months: 180 months

The monthly repayment is 5 1 1 1.89 yuan.

The total interest paid is 320,65438 yuan +040.76 yuan.

The total principal and interest is 920, 140.76 yuan.

2. Repayment method of equal principal:

The total loan is 600,000 yuan.

Number of repayment months: 180 months

The repayment in the first month is 6408.33 yuan.

Decreasing monthly: 17.08 yuan.

The total interest paid is 278,287.50 yuan.

The total principal and interest is 878,287.50 yuan.