Boeing and Airbus are two major aerospace manufacturers known for their commercial aircraft production. They undertake various aircraft development projects with significant costs.

Scenario: Boeing is developing its latest commercial aircraft model, while Airbus is working on its flagship airliner. The development costs for each project include research and development (R&D), manufacturing setup, and testing.

Project	Research and Development Expenses	Manufacturing Setup Costs	Testing Expenses
Boeing Aircraft	$1.5 billion	$1 billion	$800 million
Airbus Airliner	$1.2 billion	$900 million	$700 million

Requirements:

1. Calculate the total project costs for Boeing's aircraft development.
2. Determine the total project costs for Airbus's airliner development.
3. Analyze the cost distribution across different project components for both Boeing and Airbus.