I do not understand how to calculate operating margin. Please explain, thank you.

Data table Data table Martini Hotel \& Casino is situated on beautiful Lake Tahoe in Nevada. The complex includes a 300-room hotel, a casino, and a restaurant. As Martini's new controller, your manager asks you to recommend the basis the hotel should use for allocating fixed overhead costs to the three divisions in 2020. You are presented with the following income statement information for 2019: (Click the icon to view the data.) You are also given the following data on the three divisions. (Click the icon to view the data.) You are told that you may choose to allocate indirect costs based on one of the following: direct costs, floor space, or the number of employees. Total fixed overhead costs for 2019 were $14,660,000. Read the requirements. Requirement 1. Calculate division margins in percentage terms prior to allocating fixed overhead costs. (Round your answers to two decimal places, X.XX ) Requirement 2. Allocate indirect costs to the three divisions using each of the three allocation bases suggested. For each allocation base, calculate division operating margins after allocations, in dollars and as a percentage of revenues. Allocate the indirect costs, then calculate the division operating margin in dollars and as a percentage of revenue for each segment. Begin with cost allocation based on direct costs. (Round percentages, including intermediate calculations, to two decimal places, X.XX\%. Round dollar amounts to the nearest dollar. Use parentheses or a minus sign for negative amounts.) Data table Data table Martini Hotel \& Casino is situated on beautiful Lake Tahoe in Nevada. The complex includes a 300-room hotel, a casino, and a restaurant. As Martini's new controller, your manager asks you to recommend the basis the hotel should use for allocating fixed overhead costs to the three divisions in 2020. You are presented with the following income statement information for 2019: (Click the icon to view the data.) You are also given the following data on the three divisions. (Click the icon to view the data.) You are told that you may choose to allocate indirect costs based on one of the following: direct costs, floor space, or the number of employees. Total fixed overhead costs for 2019 were $14,660,000. Read the requirements. Requirement 1. Calculate division margins in percentage terms prior to allocating fixed overhead costs. (Round your answers to two decimal places, X.XX ) Requirement 2. Allocate indirect costs to the three divisions using each of the three allocation bases suggested. For each allocation base, calculate division operating margins after allocations, in dollars and as a percentage of revenues. Allocate the indirect costs, then calculate the division operating margin in dollars and as a percentage of revenue for each segment. Begin with cost allocation based on direct costs. (Round percentages, including intermediate calculations, to two decimal places, X.XX\%. Round dollar amounts to the nearest dollar. Use parentheses or a minus sign for negative amounts.)