I would like help understanding the formula to calculate incremental profit.

Question 6 of 9 -/18 view Policies Current Attempt in Progress Kirk Minerals processes materials extracted from mines. The most common raw material that it processes results in three joint products: Spock, Uhura, and Sulu. Each of these products can be sold as is, or each can be processed further and sold for a higher price. The company incurs joint costs of $178,600 to process one batch of the raw material that produces the three joint products. The following cost and sales information is available for one batch of each product. Spock Uhura Sulu Sales Value at Split-Off Point $209,500 299,900 454,000 Allocated Joint Costs $39,200 59.100 80,300 Cost to Process Further $110,100 85,100 249,500 Sales Value of Processed Product $300,900 400,900 800,700 Determine the incremental profit or loss that each of the three joint products. (Enter negative amounts using either a negative sign preceding the number eg.-45 or parentheses e.g. (45).) Spock Uhura Sulu Incremental profit (loss) $ Indicate whether each of the three joint products should be sold as is, or processed further. Spock Uhura Sulu