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: notes to the consolidated financial statements union pacific corporation and subsidiary companies for purposes of this report , unless the context otherwise requires , all references herein to the 201ccorporation 201d , 201ccompany 201d , 201cupc 201d , 201cwe 201d , 201cus 201d , and 201cour 201d mean union pacific corporation and its subsidiaries , including union pacific railroad company , which will be separately referred to herein as 201cuprr 201d or the 201crailroad 201d . 1 . nature of operations operations and segmentation 2013 we are a class i railroad operating in the u.s . our network includes 32236 route miles , linking pacific coast and gulf coast ports with the midwest and eastern u.s . gateways and providing several corridors to key mexican gateways . we own 26039 miles and operate on the remainder pursuant to trackage rights or leases . we serve the western two-thirds of the country and maintain coordinated schedules with other rail carriers for the handling of freight to and from the atlantic coast , the pacific coast , the southeast , the southwest , canada , and mexico . export and import traffic is moved through gulf coast and pacific coast ports and across the mexican and canadian borders . the railroad , along with its subsidiaries and rail affiliates , is our one reportable operating segment . although we provide and analyze revenue by commodity group , we treat the financial results of the railroad as one segment due to the integrated nature of our rail network . our operating revenues are primarily derived from contracts with customers for the transportation of freight from origin to destination . effective january 1 , 2018 , the company reclassified its six commodity groups into four : agricultural products , energy , industrial , and premium . the following table represents a disaggregation of our freight and other revenues: . <table class='wikitable'><tr><td>1</td><td>millions</td><td>2018</td><td>2017</td><td>2016</td></tr><tr><td>2</td><td>agricultural products</td><td>$ 4469</td><td>$ 4303</td><td>$ 4209</td></tr><tr><td>3</td><td>energy</td><td>4608</td><td>4498</td><td>3715</td></tr><tr><td>4</td><td>industrial</td><td>5679</td><td>5204</td><td>4964</td></tr><tr><td>5</td><td>premium</td><td>6628</td><td>5832</td><td>5713</td></tr><tr><td>6</td><td>total freight revenues</td><td>$ 21384</td><td>$ 19837</td><td>$ 18601</td></tr><tr><td>7</td><td>other subsidiary revenues</td><td>881</td><td>885</td><td>814</td></tr><tr><td>8</td><td>accessorial revenues</td><td>502</td><td>458</td><td>455</td></tr><tr><td>9</td><td>other</td><td>65</td><td>60</td><td>71</td></tr><tr><td>10</td><td>total operating revenues</td><td>$ 22832</td><td>$ 21240</td><td>$ 19941</td></tr></table> although our revenues are principally derived from customers domiciled in the u.s. , the ultimate points of origination or destination for some products we transport are outside the u.s . each of our commodity groups includes revenue from shipments to and from mexico . included in the above table are freight revenues from our mexico business which amounted to $ 2.5 billion in 2018 , $ 2.3 billion in 2017 , and $ 2.2 billion in 2016 . basis of presentation 2013 the consolidated financial statements are presented in accordance with accounting principles generally accepted in the u.s . ( gaap ) as codified in the financial accounting standards board ( fasb ) accounting standards codification ( asc ) . 2 . significant accounting policies principles of consolidation 2013 the consolidated financial statements include the accounts of union pacific corporation and all of its subsidiaries . investments in affiliated companies ( 20% ( 20 % ) to 50% ( 50 % ) owned ) are accounted for using the equity method of accounting . all intercompany transactions are eliminated . we currently have no less than majority-owned investments that require consolidation under variable interest entity requirements . cash , cash equivalents and restricted cash 2013 cash equivalents consist of investments with original maturities of three months or less . amounts included in restricted cash represent those required to be set aside by contractual agreement. .
Question: what was the total operating revenues for 2018, converted to the tens place?
Answer: 22.832
Question: so what would 2018 total operating revenues have been without the mexico business, in billions?

user
20.332
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