I am working in a flexible packaging manufacturing field. Our manufacturing process is going through 3 process. 1-Printing, 2- punching, and 3-forming (finished goods) through different machines by different time. Last month my General Manager asks me to prepare a costing sheet for a specific order. When I send it with 45% contribution over material (COM), then he asks me what is the net contribution per hour? So, being the processes is going through 3 stages how I can calculate contribution per hour? Is it possible?