{"pre_text": ["f0b7 positive train control 2013 in response to a legislative mandate to implement ptc , we expect to spend approximately $ 450 million during 2013 on developing and deploying ptc .", "we currently estimate that ptc , in accordance with implementing rules issued by the federal rail administration ( fra ) , will cost us approximately $ 2 billion by the end of the project .", "this includes costs for installing the new system along our tracks , upgrading locomotives to work with the new system , and adding digital data communication equipment to integrate the components of the system .", "f0b7 financial expectations 2013 we are cautious about the economic environment but if industrial production grows approximately 2% ( 2 % ) as projected , volume should exceed 2012 levels .", "even with no volume growth , we expect earnings to exceed 2012 earnings , generated by real core pricing gains , on-going network improvements and operational productivity initiatives .", "we also expect that a new bonus depreciation program under federal tax laws will positively impact cash flows in 2013 .", "results of operations operating revenues millions 2012 2011 2010 % (  % ) change 2012 v 2011 % (  % ) change 2011 v 2010 ."], "post_text": ["we generate freight revenues by transporting freight or other materials from our six commodity groups .", "freight revenues vary with volume ( carloads ) and average revenue per car ( arc ) .", "changes in price , traffic mix and fuel surcharges drive arc .", "we provide some of our customers with contractual incentives for meeting or exceeding specified cumulative volumes or shipping to and from specific locations , which we record as reductions to freight revenues based on the actual or projected future shipments .", "we recognize freight revenues as shipments move from origin to destination .", "we allocate freight revenues between reporting periods based on the relative transit time in each reporting period and recognize expenses as we incur them .", "other revenues include revenues earned by our subsidiaries , revenues from our commuter rail operations , and accessorial revenues , which we earn when customers retain equipment owned or controlled by us or when we perform additional services such as switching or storage .", "we recognize other revenues as we perform services or meet contractual obligations .", "freight revenues from four of our six commodity groups increased during 2012 compared to 2011 .", "revenues from coal and agricultural products declined during the year .", "our franchise diversity allowed us to take advantage of growth from shale-related markets ( crude oil , frac sand and pipe ) and strong automotive manufacturing , which offset volume declines from coal and agricultural products .", "arc increased 7% ( 7 % ) , driven by core pricing gains and higher fuel cost recoveries .", "improved fuel recovery provisions and higher fuel prices , including the lag effect of our programs ( surcharges trail fluctuations in fuel price by approximately two months ) , combined to increase revenues from fuel surcharges .", "freight revenues for all six commodity groups increased during 2011 compared to 2010 , while volume increased in all commodity groups except intermodal .", "increased demand in many market sectors , with particularly strong growth in chemicals , industrial products , and automotive shipments for the year , generated the increases .", "arc increased 12% ( 12 % ) , driven by higher fuel cost recoveries and core pricing gains .", "fuel cost recoveries include fuel surcharge revenue and the impact of resetting the base fuel price for certain traffic .", "higher fuel prices , volume growth , and new fuel surcharge provisions in renegotiated contracts all combined to increase revenues from fuel surcharges .", "our fuel surcharge programs ( excluding index-based contract escalators that contain some provision for fuel ) generated freight revenues of $ 2.6 billion , $ 2.2 billion , and $ 1.2 billion in 2012 , 2011 , and 2010 , respectively .", "ongoing rising fuel prices and increased fuel surcharge coverage drove the increases .", "additionally , fuel surcharge revenue is not entirely comparable to prior periods as we continue to convert portions of our non-regulated traffic to mileage-based fuel surcharge programs. ."], "table": [["millions", "2012", "2011", "2010", "% (  % ) change 2012 v 2011", "% (  % ) change 2011 v 2010"], ["freight revenues", "$ 19686", "$ 18508", "$ 16069", "6% ( 6 % )", "15% ( 15 % )"], ["other revenues", "1240", "1049", "896", "18", "17"], ["total", "$ 20926", "$ 19557", "$ 16965", "7% ( 7 % )", "15% ( 15 % )"]], "table_ori": [["<i>Millions</i>", "<i>2012</i>", "<i>2011</i>", "<i>2010</i>", "<i>% Change 2012 v 2011</i>", "<i>% Change 2011 v 2010</i>"], ["Freight revenues", "$19,686", "$18,508", "$16,069", "6%", "15%"], ["Other revenues", "1,240", "1,049", "896", "18", "17"], ["Total", "$20,926", "$19,557", "$16,965", "7%", "15%"]]}

Question: if freight revenues increase at the same rate as 2012 , what would expected 2013 revenues be , in millions?
Evidence:
table_1: millions the freight revenues of 2012 is $ 19686 ; the freight revenues of 2011 is $ 18508 ; the freight revenues of 2010 is $ 16069 ; the freight revenues of % ( % ) change 2012 v 2011 is 6% ( 6 % ) ; the freight revenues of % ( % ) change 2011 v 2010 is 15% ( 15 % ) ;
Program: add(19686, 6%)
Answer:
str_answer: 20867
exe_answer: 19686.06