what portion of the increase of operating expense in 2006 is incurred by the increase in stock-based compensation expense due to our adoption of sfas no?
Important information:
text_1: operating expense summary 2006 compared to 2005 overall operating expenses increased $ 122.5 million in 2006 , as compared to 2005 , primarily due to : 2022 an increase of $ 58.4 million in stock-based compensation expense due to our adoption of sfas no .
text_3: 2005 compared to 2004 operating expenses increased $ 97.4 million in 2005 , as compared to 2004 , primarily due to : 2022 an increase of $ 63.3 million in employee salary and benefit costs , primarily due to our acquisition of verisity and increased bonus and commission costs ; 2022 an increase of $ 9.9 million in stock-based compensation expense due to grants of restricted stock and the assumption of options in our acquisitions ; 2022 an increase of $ 8.6 million in losses associated with the sale of installment contract receivables ; and 2022 an increase of $ 7.1 million in costs related to the retirement of our executive chairman and former president and chief executive officer in 2005 ; partially offset by 2022 our restructuring activities , as discussed below .
text_4: marketing and sales 2006 compared to 2005 marketing and sales expenses increased $ 39.4 million in 2006 , as compared to 2005 , primarily due to : 2022 an increase of $ 14.8 million in stock-based compensation expense due to our adoption of sfas no .
Key Information: operating expenses as a percentage of total revenue .
Reasoning Steps:
Step: divide1-1(58.4, 122.5) = 47.7%
Program:
divide(58.4, 122.5)
Program (Nested):
divide(58.4, 122.5)

Please answer the following financial question based on the context provided. Make sure to give the answer in raw number, not in percentage and without any units. If the question asks for percentage the value should be less than 1
Context:
operating expenses as a percentage of total revenue .
Table
                           | 2006         | 2005         | 2004        
marketing and sales        | 27% ( 27 % ) | 28% ( 28 % ) | 28% ( 28 % )
research and development   | 31% ( 31 % ) | 29% ( 29 % ) | 31% ( 31 % )
general and administrative | 10% ( 10 % ) | 10% ( 10 % ) | 7% ( 7 % )  
operating expense summary 2006 compared to 2005 overall operating expenses increased $ 122.5 million in 2006 , as compared to 2005 , primarily due to : 2022 an increase of $ 58.4 million in stock-based compensation expense due to our adoption of sfas no . 123r ; and 2022 an increase of $ 49.2 million in salary , benefits and other employee-related costs , primarily due to an increased number of employees and increases in bonus and commission costs , in part due to our acquisition of verisity ltd. , or verisity , in the second quarter of 2005 . 2005 compared to 2004 operating expenses increased $ 97.4 million in 2005 , as compared to 2004 , primarily due to : 2022 an increase of $ 63.3 million in employee salary and benefit costs , primarily due to our acquisition of verisity and increased bonus and commission costs ; 2022 an increase of $ 9.9 million in stock-based compensation expense due to grants of restricted stock and the assumption of options in our acquisitions ; 2022 an increase of $ 8.6 million in losses associated with the sale of installment contract receivables ; and 2022 an increase of $ 7.1 million in costs related to the retirement of our executive chairman and former president and chief executive officer in 2005 ; partially offset by 2022 our restructuring activities , as discussed below . marketing and sales 2006 compared to 2005 marketing and sales expenses increased $ 39.4 million in 2006 , as compared to 2005 , primarily due to : 2022 an increase of $ 14.8 million in stock-based compensation expense due to our adoption of sfas no . 123r ; 2022 an increase of $ 18.2 million in employee salary , commissions , benefits and other employee-related costs due to increased hiring of sales and technical personnel , and higher commissions earned resulting from an increase in 2006 sales performance ; and 2022 an increase of $ 7.8 million in marketing programs and customer-focused conferences due to our new marketing initiatives and increased travel to visit our customers . 2005 compared to 2004 marketing and sales expenses increased $ 33.1 million in 2005 , as compared to 2004 , primarily due to : 2022 an increase of $ 29.4 million in employee salary , commission and benefit costs due to increased hiring of sales and technical personnel and higher employee bonuses and commissions ; and 2022 an increase of $ 1.6 million in stock-based compensation expense due to grants of restricted stock and the assumption of options in our acquisitions ; partially offset by 2022 a decrease of $ 1.9 million in marketing program costs. .
Question: 
what portion of the increase of operating expense in 2006 is incurred by the increase in stock-based compensation expense due to our adoption of sfas no?
Important information:
text_1: operating expense summary 2006 compared to 2005 overall operating expenses increased $ 122.5 million in 2006 , as compared to 2005 , primarily due to : 2022 an increase of $ 58.4 million in stock-based compensation expense due to our adoption of sfas no .
text_3: 2005 compared to 2004 operating expenses increased $ 97.4 million in 2005 , as compared to 2004 , primarily due to : 2022 an increase of $ 63.3 million in employee salary and benefit costs , primarily due to our acquisition of verisity and increased bonus and commission costs ; 2022 an increase of $ 9.9 million in stock-based compensation expense due to grants of restricted stock and the assumption of options in our acquisitions ; 2022 an increase of $ 8.6 million in losses associated with the sale of installment contract receivables ; and 2022 an increase of $ 7.1 million in costs related to the retirement of our executive chairman and former president and chief executive officer in 2005 ; partially offset by 2022 our restructuring activities , as discussed below .
text_4: marketing and sales 2006 compared to 2005 marketing and sales expenses increased $ 39.4 million in 2006 , as compared to 2005 , primarily due to : 2022 an increase of $ 14.8 million in stock-based compensation expense due to our adoption of sfas no .
Key Information: operating expenses as a percentage of total revenue .
Reasoning Steps:
Step: divide1-1(58.4, 122.5) = 47.7%
Program:
divide(58.4, 122.5)
Program (Nested):
divide(58.4, 122.5)
