Evaluate the marginal cost of expanding Amazon's server farm operations.

Cost Components	Fixed Costs ($)	Variable Costs per Unit ($)	Production Volume (units)
Server Farm Operations	4,500,000,000	10	500,000,000

Requirements:

Calculate the marginal cost per unit.

Determine the break-even point for the server farm operations expansion.

Analyze how changes in production volume affect the marginal cost.

Provide recommendations for cost management in server farm operations.