of exercise for stock options exercised or at period end for outstanding stock options , less the applicable exercise price .the company issued new shares to satisfy exercised stock options .compensation expense the company recorded $ 43 million , $ 34 million , and $ 44 million of expense related to stock awards for the years ended december 31 , 2015 , 2014 , and 2013 , respectively .the company recorded $ 17 million , $ 13 million , and $ 17 million as a tax benefit related to stock awards and stock options for the years ended december 31 , 2015 , 2014 , and 2013 , respectively .the company recognized tax benefits for the years ended december 31 , 2015 , 2014 , and 2013 , of $ 41 million , $ 53 million , and $ 32 million , respectively , from the issuance of stock in settlement of stock awards , and $ 4 million , $ 5 million , and $ 4 million for the years ended december 31 , 2015 , 2014 , and 2013 , respectively , from the exercise of stock options .unrecognized compensation expense as of december 31 , 2015 , the company had less than $ 1 million of unrecognized compensation expense associated with rsrs granted in 2015 and 2014 , which will be recognized over a weighted average period of 1.0 year , and $ 25 million of unrecognized expense associated with rpsrs granted in 2015 , 2014 , and 2013 , which will be recognized over a weighted average period of 0.6 years .as of december 31 , 2015 , the company had no unrecognized compensation expense related to stock options .compensation expense for stock options was fully recognized as of december 31 , 2013 .20 .unaudited selected quarterly data unaudited quarterly financial results for the years ended december 31 , 2015 and 2014 , are set forth in the following tables: . ( $ in millions except per share amounts ) | year ended december 31 2015 1st qtr | year ended december 31 2015 2nd qtr ( 1 ) | year ended december 31 2015 3rd qtr | year ended december 31 2015 4th qtr ( 2 )
sales and service revenues                 | $ 1570                              | $ 1745                                    | $ 1800                              | $ 1905                                   
operating income ( loss )                  | 156                                 | 269                                       | 200                                 | 144                                      
earnings ( loss ) before income taxes      | 133                                 | 244                                       | 175                                 | 80                                       
net earnings ( loss )                      | 87                                  | 156                                       | 111                                 | 50                                       
dividends declared per share               | $ 0.40                              | $ 0.40                                    | $ 0.40                              | $ 0.50                                   
basic earnings ( loss ) per share          | $ 1.80                              | $ 3.22                                    | $ 2.31                              | $ 1.07                                   
diluted earnings ( loss ) per share        | $ 1.79                              | $ 3.20                                    | $ 2.29                              | $ 1.06                                    ( 1 ) in the second quarter of 2015 , the company recorded a $ 59 million goodwill impairment charge .during the same period , the company recorded $ 136 million of operating income as a result of the aon settlement .( 2 ) in the fourth quarter of 2015 , the company recorded $ 16 million goodwill impairment and $ 27 million intangible asset impairment charges. .
Question: what is the total net income for the first two quarters of 2015?
Steps: add(87, 156)
Answer: 243.0
Question: and what is it for the first three quarters?

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.
of exercise for stock options exercised or at period end for outstanding stock options , less the applicable exercise price .the company issued new shares to satisfy exercised stock options .compensation expense the company recorded $ 43 million , $ 34 million , and $ 44 million of expense related to stock awards for the years ended december 31 , 2015 , 2014 , and 2013 , respectively .the company recorded $ 17 million , $ 13 million , and $ 17 million as a tax benefit related to stock awards and stock options for the years ended december 31 , 2015 , 2014 , and 2013 , respectively .the company recognized tax benefits for the years ended december 31 , 2015 , 2014 , and 2013 , of $ 41 million , $ 53 million , and $ 32 million , respectively , from the issuance of stock in settlement of stock awards , and $ 4 million , $ 5 million , and $ 4 million for the years ended december 31 , 2015 , 2014 , and 2013 , respectively , from the exercise of stock options .unrecognized compensation expense as of december 31 , 2015 , the company had less than $ 1 million of unrecognized compensation expense associated with rsrs granted in 2015 and 2014 , which will be recognized over a weighted average period of 1.0 year , and $ 25 million of unrecognized expense associated with rpsrs granted in 2015 , 2014 , and 2013 , which will be recognized over a weighted average period of 0.6 years .as of december 31 , 2015 , the company had no unrecognized compensation expense related to stock options .compensation expense for stock options was fully recognized as of december 31 , 2013 .20 .unaudited selected quarterly data unaudited quarterly financial results for the years ended december 31 , 2015 and 2014 , are set forth in the following tables: . ( $ in millions except per share amounts ) | year ended december 31 2015 1st qtr | year ended december 31 2015 2nd qtr ( 1 ) | year ended december 31 2015 3rd qtr | year ended december 31 2015 4th qtr ( 2 )
sales and service revenues                 | $ 1570                              | $ 1745                                    | $ 1800                              | $ 1905                                   
operating income ( loss )                  | 156                                 | 269                                       | 200                                 | 144                                      
earnings ( loss ) before income taxes      | 133                                 | 244                                       | 175                                 | 80                                       
net earnings ( loss )                      | 87                                  | 156                                       | 111                                 | 50                                       
dividends declared per share               | $ 0.40                              | $ 0.40                                    | $ 0.40                              | $ 0.50                                   
basic earnings ( loss ) per share          | $ 1.80                              | $ 3.22                                    | $ 2.31                              | $ 1.07                                   
diluted earnings ( loss ) per share        | $ 1.79                              | $ 3.20                                    | $ 2.29                              | $ 1.06                                    ( 1 ) in the second quarter of 2015 , the company recorded a $ 59 million goodwill impairment charge .during the same period , the company recorded $ 136 million of operating income as a result of the aon settlement .( 2 ) in the fourth quarter of 2015 , the company recorded $ 16 million goodwill impairment and $ 27 million intangible asset impairment charges. .
Question: what is the total net income for the first two quarters of 2015?
Steps: add(87, 156)
Answer: 243.0
Question: and what is it for the first three quarters?
