Please explain how you do this problem

Campbell Corp. exchanged delivery trucks Highway, Inc. Campbell's truck originally cost $23,000, its accumulated depreciation was $20,000, and its fair value was $5,000. Highway's truck originally cost $23, 500, its accumulated depreciation was $19, 900, and its fair value was $5.700. Campbell also paid Highway $700 in cash as part of the transaction. The transaction lacks Commercial substance. What amount is the new book value for the Campbell received