would you please help to get the correct and clear answer. thank you.

Lauderdale Corporation is organized in three geographical divisions (regions) with managers responsible for revenues, costs, and assets in their respective regions. The firm is highly decentralized and managers are evaluated solely on divisional performance. Corporate overhead (all fixed) is allocated to the regions based on regional gross margin (regional revenue minus regional cost of sales). The following information is from Lauderdale's first year of operations: Required: a. Compute divisional operating income for the three regions. Ignore taxes. b. How have these regions performed? Answer is complete but not entirely correct. Complete this question by entering your answers in the tabs below. Compute divisional operating income for the three regions. Ignore taxes. Note: Do not round the "Overhead rate" value. Round your final answers to the nearest whole dollar amount