The following table contains national income accounting data for a hypothetical economy: Disposable personal income $7,000 million Personal income tax and nontax payments $ 900 million Government and business transfer payments $1,500 million Corporate taxes, Social Security contributions, and corporate retained earnings $1,100 million Taxes unrelated to incomes net of subsidies $ 900 million Depreciation $1,000 million Starting from the value for disposable personal income (DPI), gross domestic product is calculated to be $ (enter your response as an integer)