Patent sales were 6,543,800+million.

Debit: bank deposit 1000

Accumulated amortization of 200 pounds

Intangible assets impairment reserve 100

Loan: intangible assets 600

Taxes payable-business tax payable 50

Non-operating income 650

The book balance of intangible assets is 6 billion, amortization is 2 million, and provision for impairment is 654.38 billion, that is, the book value of intangible assets is 3 million (60 million-2006.5438 million).

Sold 6.5438+million, which is income. Revenue minus cost, 1000-300=700.

Finally, the business tax of 500,000 yuan was paid, which was included in 7 million yuan, and it had to be deducted, so it was 700-50=650.