notes to the audited consolidated financial statements 6 .equity investments eastman has a 50 percent interest in and serves as the operating partner in primester , a joint venture which manufactures cellulose acetate at eastman's kingsport , tennessee plant .this investment is accounted for under the equity method .eastman's net investment in the joint venture at december 31 , 2007 and 2006 was approximately $ 43 million and $ 47 million , respectively , which was comprised of the recognized portion of the venture's accumulated deficits , long-term amounts owed to primester , and a line of credit from eastman to primester .such amounts are included in other noncurrent assets .eastman owns a 50 percent interest in nanjing yangzi eastman chemical ltd .( 201cnanjing 201d ) , a company which manufactures eastotactm hydrocarbon tackifying resins for the adhesives market .this joint venture is accounted for under the equity method and is included in other noncurrent assets .at december 31 , 2007 and 2006 , the company 2019s investment in nanjing was approximately $ 7 million and $ 5 million , respectively .in october 2007 , the company entered into an agreement with green rock energy , l.l.c .( "green rock" ) , a company formed by the d .e .shaw group and goldman , sachs & co. , to jointly develop the industrial gasification facility in beaumont , texas through tx energy , llc ( "tx energy" ) .eastman owns a 50 percent interest in tx energy , which is expected to be operational in 2011 and will produce intermediate chemicals , such as hydrogen , methanol , and ammonia from petroleum coke .this joint venture in the development stage is accounted for under the equity method , and is included in other noncurrent assets .at december 31 , 2007 , the company 2019s investment in tx energy was approximately $ 26 million .eastman also plans to participate in a project sponsored by faustina hydrogen products , l.l.c .which will use petroleum coke as the primary feedstock to make anhydrous ammonia and methanol .faustina hydrogen products is primarily owned by green rock .the company intends to take a 25 percent or greater equity position in the project , provide operations , maintenance , and other site management services , and purchase methanol under a long-term contract .capital costs for the facility are estimated to be approximately $ 1.6 billion .project financing is expected to be obtained by the end of 2008 .the facility will be built in st .james parish , louisiana and is expected to be complete by 2011 .on april 21 , 2005 , the company completed the sale of its equity investment in genencor international , inc .( "genencor" ) for cash proceeds of approximately $ 417 million , net of $ 2 million in fees .the book value of the investment prior to sale was $ 246 million , and the company recorded a pre-tax gain on the sale of $ 171 million .7 .payables and other current liabilities december 31 , ( dollars in millions ) 2007 2006 .
[['( dollars in millions )', 'december 31 2007', '2006'], ['trade creditors', '$ 578', '$ 581'], ['accrued payrolls vacation and variable-incentive compensation', '138', '126'], ['accrued taxes', '36', '59'], ['post-employment obligations', '60', '63'], ['interest payable', '31', '31'], ['bank overdrafts', '6', '11'], ['other', '164', '185'], ['total payables and other current liabilities', '$ 1013', '$ 1056']]
the current portion of post-employment obligations is an estimate of current year payments in excess of plan assets. .

Question: what was the ratio of the investment prior to sale to the pre-tax gain on the sale
Answer: 1.44