Room number: 6- 1050 1

Area: 108 m2

Unit price: 5000 yuan/square meter

Total price: 5000 yuan /㎡* 108㎡=540000 yuan.

40% down payment: 540,000 yuan * 40% = 2 1.6 million yuan.

Loan: 540,000 yuan -2 1.6 million yuan = 324,000 yuan.

Since the bank mortgage is a whole loan, not a zero loan, which is generally only 10,000 yuan, the change of the loan of 324,000 yuan is adjusted to the down payment: therefore,

The down payment becomes: 2 16000 yuan +4000 yuan =220000 yuan.

Then the loan is: 320,000 yuan

At present, the monthly repayment amount of 10 in the bank's ten thousand yuan interest rate table is: it seems to be 1 15. I'm not sure, but this data is provided by the bank and implemented in accordance with national policies.

Then the monthly repayment amount: 320,000 yuan *115 = 3,680 yuan/month.

The next step is to calculate the interest:

Monthly repayment amount: 3680 yuan/month, loan term 10 year.

So you always have to pay it back to the bank: 3680* 12 months * 10 year =44 1600 yuan.

But you actually borrowed 320,000 yuan. According to the above, you paid back 4,465,438 yuan +0.600 yuan to the bank.

So your total interest is: 44 1600 yuan-320,000 yuan = 12 1600 yuan.

Finally, it is concluded that your interest is 12 1600 yuan.

I don't know. Have I made myself clear?