Please help me determine the NOPAT with an explanation. Cisco Systems Inc. Consolidated Statements of Income Years Ended December ($ millions)

Cisco Systems Inc. Consolidated Statements of Income Years Ended December ($ millions) July 30, 2016

Revenue Product $37,254 Service 11,993 Total revenue 49,247 Cost of sales Product 14,161 Service 4,126 Total cost of sales 18,287 Gross margin 30,960 Operating expenses Research and development 6,296 Sales and marketing 9,619 General and administrative 1,814 Amortization of purchased intangible assets 303 Restructuring and other charges 268 Total operating expenses 18,300 1 Operating income 12,660 Interest income 1,005 Interest expense (676) Other income (loss), net (69) Interest and other income (loss), net 260 Income before provision for income taxes 12,920 1 Provision for income taxes 2,181 Net income $10,739