{"pre_text": ["volume declines in cement , some agricultural products , and newsprint shipments partially offset the increases .", "operating expenses millions of dollars 2008 2007 2006 % (  % ) change 2008 v 2007 % (  % ) change 2007 v 2006 ."], "post_text": ["operating expenses increased $ 987 million in 2008 .", "our fuel price per gallon rose 39% ( 39 % ) during the year , increasing operating expenses by $ 1.1 billion compared to 2007 .", "wage , benefit , and materials inflation , higher depreciation , and costs associated with the january cascade mudslide and hurricanes gustav and ike also increased expenses during the year .", "cost savings from productivity improvements , better resource utilization , and lower volume helped offset these increases .", "operating expenses increased $ 214 million in 2007 versus 2006 .", "higher fuel prices , which rose 9% ( 9 % ) during the period , increased operating expenses by $ 242 million .", "wage , benefit and materials inflation and higher depreciation expense also increased expenses during the year .", "productivity improvements , better resource utilization , and a lower fuel consumption rate helped offset these increases .", "compensation and benefits 2013 compensation and benefits include wages , payroll taxes , health and welfare costs , pension costs , other postretirement benefits , and incentive costs .", "productivity initiatives in all areas , combined with lower volume , led to a 4% ( 4 % ) decline in our workforce for 2008 , saving $ 227 million compared to 2007 .", "conversely , general wage and benefit inflation and higher pension and postretirement benefits increased expenses in 2008 , partially offsetting these reductions .", "operational improvements and lower volume levels in 2007 led to a 1% ( 1 % ) decline in our workforce , saving $ 79 million in 2007 compared to 2006 .", "a smaller workforce and less need for new train personnel reduced training costs during the year , which contributed to the improvement .", "general wage and benefit inflation mostly offset the reductions , reflecting higher salaries and wages and the impact of higher healthcare and other benefit costs .", "fuel 2013 fuel includes locomotive fuel and gasoline for highway and non-highway vehicles and heavy equipment .", "diesel fuel prices , which averaged $ 3.15 per gallon ( including taxes and transportation costs ) in 2008 compared to $ 2.27 per gallon in 2007 , increased expenses by $ 1.1 billion .", "a 4% ( 4 % ) improvement in our fuel consumption rate resulted in $ 136 million of cost savings due to the use of newer , more fuel 2008 operating expenses ."], "table": [["millions of dollars", "2008", "2007", "2006", "% (  % ) change 2008 v 2007", "% (  % ) change 2007 v 2006"], ["compensation and benefits", "$ 4457", "$ 4526", "$ 4535", "( 2 ) % (  % )", "-% ( - % )"], ["fuel", "3983", "3104", "2968", "28", "5"], ["purchased services and materials", "1902", "1856", "1756", "2", "6"], ["depreciation", "1387", "1321", "1237", "5", "7"], ["equipment and other rents", "1326", "1368", "1396", "-3 ( 3 )", "-2 ( 2 )"], ["other", "840", "733", "802", "15", "-9 ( 9 )"], ["total", "$ 13895", "$ 12908", "$ 12694", "8 % (  % )", "2% ( 2 % )"]], "table_ori": [["<i>Millions of Dollars</i>", "<i>2008</i>", "<i>2007</i>", "<i>2006</i>", "<i>% Change 2008 v 2007</i>", "% Change 2007 v 2006"], ["Compensation and benefits", "$4,457", "$4,526", "$4,535", "(2)%", "-%"], ["Fuel", "3,983", "3,104", "2,968", "28", "5"], ["Purchased services and materials", "1,902", "1,856", "1,756", "2", "6"], ["Depreciation", "1,387", "1,321", "1,237", "5", "7"], ["Equipment and other rents", "1,326", "1,368", "1,396", "(3)", "(2)"], ["Other", "840", "733", "802", "15", "(9)"], ["Total", "$13,895", "$12,908", "$12,694", "8 %", "2%"]]}

Question: what percent of total operating expenses was fuel in 2008?
Evidence:
table_2: millions of dollars the fuel of 2008 is 3983 ; the fuel of 2007 is 3104 ; the fuel of 2006 is 2968 ; the fuel of % ( % ) change 2008 v 2007 is 28 ; the fuel of % ( % ) change 2007 v 2006 is 5 ;
table_7: millions of dollars the total of 2008 is $ 13895 ; the total of 2007 is $ 12908 ; the total of 2006 is $ 12694 ; the total of % ( % ) change 2008 v 2007 is 8 % ( % ) ; the total of % ( % ) change 2007 v 2006 is 2% ( 2 % ) ;
Program: divide(3983, 13895)
Answer:
str_answer: 29%
exe_answer: 0.28665