costs and expenses our total costs and expenses were as follows: .

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• ( in millions ), fiscal years ended march 31 2018, fiscal years ended march 31 2017 ( 1 ), fiscal years ended april 1 2016 ( 1 ), fiscal years ended 2018, fiscal years ended 2017 ( 1 ), 2016 ( 1 )
• costs of services ( excludes depreciation and amortization and restructuring costs ), $ 17944, $ 5545, $ 5185, 73.0% ( 73.0 % ), 72.9% ( 72.9 % ), 73.0% ( 73.0 % )
• selling general and administrative ( excludes depreciation and amortization and restructuring costs ), 2010, 1279, 1059, 8.2, 16.8, 14.9
• depreciation and amortization, 1964, 647, 658, 8.0, 8.5, 9.3
• restructuring costs, 803, 238, 23, 3.3, 3.1, 0.3
• interest expense net, 246, 82, 85, 1.0, 1.1, 1.2
• debt extinguishment costs, 2014, 2014, 95, 2014, 2014, 1.3
• other income net, -82 ( 82 ), -10 ( 10 ), -9 ( 9 ), -0.3 ( 0.3 ), -0.1 ( 0.1 ), -0.1 ( 0.1 )
• total costs and expenses, $ 22885, $ 7781, $ 7096, 93.2% ( 93.2 % ), 102.3% ( 102.3 % ), 99.9% ( 99.9 % )
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( 1 ) fiscal 2017 and 2016 costs and expenses are for csc only and therefore are not directly comparable to fiscal 2018 costs and expenses . during fiscal 2018 , we took actions to optimize our workforce , extract greater supply chain efficiencies and rationalize our real estate footprint . we reduced our labor base by approximately 13% ( 13 % ) through a combination of automation , best shoring and pyramid correction . we also rebalanced our skill mix , including the addition of more than 18000 new employees and the ongoing retraining of the existing workforce . in real estate , we restructured over four million square feet of space during fiscal 2018 . costs of services fiscal 2018 compared with fiscal 2017 cost of services excluding depreciation and amortization and restructuring costs ( "cos" ) was $ 17.9 billion for fiscal 2018 as compared to $ 5.5 billion for fiscal 2017 . the increase in cos was driven by the hpes merger and was partially offset by reduction in costs associated with our labor base and real estate . cos for fiscal 2018 included $ 192 million of pension and opeb actuarial and settlement gains associated with our defined benefit pension plans . fiscal 2017 compared with fiscal 2016 cos as a percentage of revenues remained consistent year over year . the $ 360 million increase in cos was largely related to our acquisitions and a $ 31 million gain on the sale of certain intangible assets in our gis segment during fiscal 2016 not present in the current fiscal year . this increase was offset by management's ongoing cost reduction initiatives and a year-over-year favorable change of $ 28 million to pension and opeb actuarial and settlement losses associated with our defined benefit pension plans . the amount of restructuring charges , net of reversals , excluded from cos was $ 219 million and $ 7 million for fiscal 2017 and 2016 , respectively . selling , general and administrative fiscal 2018 compared with fiscal 2017 selling , general and administrative expense excluding depreciation and amortization and restructuring costs ( "sg&a" ) was $ 2.0 billion for fiscal 2018 as compared to $ 1.3 billion for fiscal 2017 . the increase in sg&a was driven by the hpes merger . integration , separation and transaction-related costs were $ 408 million during fiscal 2018 , as compared to $ 305 million during fiscal 2017. .

Question: in fiscal 2018 what percentage of total costs and expenses was costs of services ( excludes depreciation and amortization and restructuring costs ) ?
Program: divide(17944, 22885)
Answer: 0.78409