Evaluate the marginal cost of expanding McDonald's restaurant operations globally.

Cost Components	Fixed Costs ($)	Variable Costs per Unit ($)	Production Volume (units)
Restaurant Operations	2,000,000,000	3	1,000,000,000

Requirements:

Calculate the marginal cost per unit.

Determine the break-even point for the restaurant operations expansion.

Analyze how changes in production volume affect the marginal cost.

Provide recommendations for cost management in restaurant operations.