How to do accounting entries for car dealership selling car with trade in?

How do you do the journal entries if a car dealership sold a car with a trade in?

Lets say the dealer is selling the BMW for 24,000 with original cost of 20,000. And the trade in from the customer is worth 18,000.



So the dealer receives 6,000 cash from this transaction but how is revenue recognized?
How to do accounting entries for car dealership selling car with trade in?
DR Cash 6000 (24000-18000)

DR Cost of Sales 20000

CR Inventory 2000 (18000-20000)

CR Revenue 24000