Read the following texts and table with financial data from an S&P 500 earnings report carefully.Based on the question-answer history (if provided), answer the last question. The answer may require mathematical calculation based on the data provided.

Text: corporate/other corporate/other includes global staff functions ( includes finance , risk , human resources , legal and compliance ) and other corporate expense , global operations and technology ( o&t ) , residual corporate treasury and corporate items . at december 31 , 2009 , this segment had approximately $ 230 billion of assets , consisting primarily of the company 2019s liquidity portfolio , including $ 110 billion of cash and cash equivalents. . <table class='wikitable'><tr><td>1</td><td>in millions of dollars</td><td>2009</td><td>2008</td><td>2007</td></tr><tr><td>2</td><td>net interest revenue</td><td>$ -1663 ( 1663 )</td><td>$ -2680 ( 2680 )</td><td>$ -2008 ( 2008 )</td></tr><tr><td>3</td><td>non-interest revenue</td><td>-8893 ( 8893 )</td><td>422</td><td>-302 ( 302 )</td></tr><tr><td>4</td><td>total revenues net of interest expense</td><td>$ -10556 ( 10556 )</td><td>$ -2258 ( 2258 )</td><td>$ -2310 ( 2310 )</td></tr><tr><td>5</td><td>total operating expenses</td><td>$ 1420</td><td>$ 510</td><td>$ 1813</td></tr><tr><td>6</td><td>provisions for loan losses and for benefits and claims</td><td>-1 ( 1 )</td><td>1</td><td>-3 ( 3 )</td></tr><tr><td>7</td><td>( loss ) from continuing operations before taxes</td><td>$ -11975 ( 11975 )</td><td>$ -2769 ( 2769 )</td><td>$ -4120 ( 4120 )</td></tr><tr><td>8</td><td>income taxes ( benefits )</td><td>-4369 ( 4369 )</td><td>-587 ( 587 )</td><td>-1446 ( 1446 )</td></tr><tr><td>9</td><td>( loss ) from continuing operations</td><td>$ -7606 ( 7606 )</td><td>$ -2182 ( 2182 )</td><td>$ -2674 ( 2674 )</td></tr><tr><td>10</td><td>income ( loss ) from discontinued operations net of taxes</td><td>-445 ( 445 )</td><td>4002</td><td>708</td></tr><tr><td>11</td><td>net income ( loss ) before attribution of noncontrolling interests</td><td>$ -8051 ( 8051 )</td><td>$ 1820</td><td>$ -1966 ( 1966 )</td></tr><tr><td>12</td><td>net income attributable to noncontrolling interests</td><td>2014</td><td>2014</td><td>2</td></tr><tr><td>13</td><td>net income ( loss )</td><td>$ -8051 ( 8051 )</td><td>$ 1820</td><td>$ -1968 ( 1968 )</td></tr></table> 2009 vs . 2008 revenues , net of interest expense declined , primarily due to the pretax loss on debt extinguishment related to the repayment of the $ 20 billion of tarp trust preferred securities and the pretax loss in connection with the exit from the loss-sharing agreement with the u.s . government . revenues also declined , due to the absence of the 2008 sale of citigroup global services limited recorded in o&t . this was partially offset by a pretax gain related to the exchange offers , revenues and higher intersegment eliminations . operating expenses increased , primarily due to intersegment eliminations and increases in compensation , partially offset by lower repositioning reserves . 2008 vs . 2007 revenues , net of interest expense increased primarily due to the gain in 2007 on the sale of certain corporate-owned assets and higher intersegment eliminations , partially offset by improved treasury hedging activities . operating expenses declined , primarily due to lower restructuring charges in 2008 as well as reductions in incentive compensation and benefits expense. .
Question: what were operating expenses in 2008?

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