considering the average exercise price of options , what is the increase in the total value of stock options observed during 2016 and 2017 , in millions of dollars?
Important information:
text_0: the following shares were excluded from the calculation of average shares outstanding 2013 diluted as their effect was anti- dilutive ( shares in millions ) . .
table_3: the stock options ( 1 ) of 2018 is 9 ; the stock options ( 1 ) of 2017 is 11 ; the stock options ( 1 ) of 2016 is 13 ;
text_1: ( 1 ) the average exercise price of options per share was $ 26.79 , $ 33.32 , and $ 26.93 for 2018 , 2017 , and 2016 , respectively .
Key Information: the following shares were excluded from the calculation of average shares outstanding 2013 diluted as their effect was anti- dilutive ( shares in millions ) . .
Reasoning Steps:
Step: multiply2-1(11, 33.32) = 366.52
Step: multiply2-2(13, 26.93) = 350.09
Step: minus2-3(#0, #1) = 16.43
Program:
multiply(11, 33.32), multiply(13, 26.93), subtract(#0, #1)
Program (Nested):
subtract(multiply(11, 33.32), multiply(13, 26.93))

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:
the following shares were excluded from the calculation of average shares outstanding 2013 diluted as their effect was anti- dilutive ( shares in millions ) . .
Table
                                      | 2018 | 2017 | 2016
mandatory convertible preferred stock | n/a  | 39   | 39  
convertible notes                     | 2014 | 14   | 14  
stock options ( 1 )                   | 9    | 11   | 13  
stock awards                          | 2014 | 7    | 8   
( 1 ) the average exercise price of options per share was $ 26.79 , $ 33.32 , and $ 26.93 for 2018 , 2017 , and 2016 , respectively . in 2017 , had arconic generated sufficient net income , 30 million , 14 million , 5 million , and 1 million potential shares of common stock related to the mandatory convertible preferred stock , convertible notes , stock awards , and stock options , respectively , would have been included in diluted average shares outstanding . the mandatory convertible preferred stock converted on october 2 , 2017 ( see note i ) . in 2016 , had arconic generated sufficient net income , 28 million , 10 million , 4 million , and 1 million potential shares of common stock related to the mandatory convertible preferred stock , convertible notes , stock awards , and stock options , respectively , would have been included in diluted average shares outstanding. .
Question: 
considering the average exercise price of options , what is the increase in the total value of stock options observed during 2016 and 2017 , in millions of dollars?
Important information:
text_0: the following shares were excluded from the calculation of average shares outstanding 2013 diluted as their effect was anti- dilutive ( shares in millions ) . .
table_3: the stock options ( 1 ) of 2018 is 9 ; the stock options ( 1 ) of 2017 is 11 ; the stock options ( 1 ) of 2016 is 13 ;
text_1: ( 1 ) the average exercise price of options per share was $ 26.79 , $ 33.32 , and $ 26.93 for 2018 , 2017 , and 2016 , respectively .
Key Information: the following shares were excluded from the calculation of average shares outstanding 2013 diluted as their effect was anti- dilutive ( shares in millions ) . .
Reasoning Steps:
Step: multiply2-1(11, 33.32) = 366.52
Step: multiply2-2(13, 26.93) = 350.09
Step: minus2-3(#0, #1) = 16.43
Program:
multiply(11, 33.32), multiply(13, 26.93), subtract(#0, #1)
Program (Nested):
subtract(multiply(11, 33.32), multiply(13, 26.93))
