hologic , inc .
notes to consolidated financial statements ( continued ) ( in thousands , except per share data ) acquisition of r2 technology , inc .
on july 13 , 2006 , the company completed the acquisition of r2 technology , inc .
( 201cr2 201d ) pursuant to an agreement and plan of merger dated april 24 , 2006 .
the results of operations for r2 have been included in the company 2019s consolidated financial statements from the date of acquisition as part of its mammography/breast care business segment .
r2 , previously located in santa clara , california , develops and sells computer-aided detection technology and products ( 201ccad 201d ) , an innovative technology that assists radiologists in the early detection of breast cancer .
the aggregate purchase price for r2 of approximately $ 220600 consisted of approximately 8800 shares of hologic common stock valued at $ 205500 , cash paid of $ 6900 , debt assumed of $ 5700 and approximately $ 2500 for acquisition related fees and expenses .
the company determined the fair value of the shares issued in connection with the acquisition in accordance with eitf issue no .
99-12 , determination of the measurement date for the market price of acquirer securities issued in a purchase business combination .
the components and allocation of the purchase price , consists of the following approximate amounts: .

Net tangible assets acquired as of July 13, 2006
$1,200
In-process research and development
10,200
Developed technology and know-how
39,500
Customer relationship
15,700
Trade name
3,300
Order backlog
800
Deferred income taxes
6,700
Goodwill
143,200
Final purchase price
$220,600

the company finalized and completed a plan to restructure certain of r2 2019s historical activities .
as of the acquisition date the company recorded a liability of approximately $ 798 in accordance with eitf issue no .
95-3 , recognition of liabilities in connection with a purchase business combination , related to the termination of certain employees and loss related to the abandonment of certain lease space under this plan .
all amounts under this plan have been paid as of september 29 , 2007 .
the company reduced goodwill related to the r2 acquisition in the amount of approximately $ 2300 and $ 400 during the years ended september 27 , 2008 and september 29 , 2007 , respectively .
the reduction in 2007 was primarily related to a change in the preliminary valuation of certain assets and liabilities acquired based on information received during the year .
the decrease in goodwill in 2008 was related to the reduction of an income tax liability .
the final purchase price allocations were completed and the adjustments did not have a material impact on the company 2019s financial position or results of operation .
as part of the purchase price allocation , all intangible assets that were a part of the acquisition were identified and valued .
it was determined that only customer relationship , trade name , developed technology and know how and in-process research and development had separately identifiable values .
customer relationship represents r2 2019s strong active customer base , dominant market position and strong partnership with several large companies .
trade name represents the r2 product names that the company intends to continue to use .
order backlog consists of customer orders for which revenue has not yet been recognized .
developed technology and know how represents currently marketable purchased products that the company continues to resell as well as utilize to enhance and incorporate into the company 2019s existing products .
the estimated $ 10200 of purchase price allocated to in-process research and development projects primarily related to r2 2019s digital cad products .
the projects added direct digital algorithm capabilities as well as .

Question: Analyse this data from a financial earnings document. what is the estimated price of hologic common stock used in r2 acquisition?
Choices:
20.14706
-23.35227
0.00002
257.5188
23.35227
Correct choice index: 4