$2a.$ The average end user price $($retail or corporate$)$ for a PC Server is $$3,600.$ The corresponding average price for a Desktop PC is $$750$ and a Laptop PC $$1,250.$ The average gross margin for each of these segments if a manufacturer sells directly to end users $($as Dell does$)$ is $25\%$ for a server, $15\%$ for a desktop, and $19\%$ for a laptop. What is the dollar amount $($gross profit$)$ the average computer manufacturer makes per unit in each of these segments? Fill in the blanks in this table: