what is the unrealized gain pre-tex for bm&fbovespa?
Important information:
text_4: ( in millions ) carrying unrealized net of tax .
table_1: ( in millions ) the bm&fbovespa s.a . of costbasis is $ 262.9 ; the bm&fbovespa s.a . of fairvalue is $ 690.6 ; the bm&fbovespa s.a . of carryingvalue is $ 690.6 ; the bm&fbovespa s.a . of unrealizedgainnet of tax is $ 271.4 ;
table_2: ( in millions ) the bolsa mexicana de valores s.a.b . de c.v . of costbasis is 17.3 ; the bolsa mexicana de valores s.a.b . de c.v . of fairvalue is 29.3 ; the bolsa mexicana de valores s.a.b . de c.v . of carryingvalue is 29.3 ; the bolsa mexicana de valores s.a.b . de c.v . of unrealizedgainnet of tax is 7.6 ;
Reasoning Steps:
Step: minus1-1(690.6, 262.9) = 427.7
Program:
subtract(690.6, 262.9)
Program (Nested):
subtract(690.6, 262.9)

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:
subject to fluctuation and , consequently , the amount realized in the subsequent sale of an investment may differ significantly from its current reported value . fluctuations in the market price of a security may result from perceived changes in the underlying economic characteristics of the issuer , the relative price of alternative investments and general market conditions . the table below summarizes equity investments that are subject to equity price fluctuations at december 31 , 2012 . equity investments are included in other assets in our consolidated balance sheets . ( in millions ) carrying unrealized net of tax .
Table
( in millions )                            | costbasis | fairvalue | carryingvalue | unrealizedgainnet of tax
bm&fbovespa s.a .                          | $ 262.9   | $ 690.6   | $ 690.6       | $ 271.4                 
bolsa mexicana de valores s.a.b . de c.v . | 17.3      | 29.3      | 29.3          | 7.6                     
imarex asa                                 | 2014      | 1.8       | 1.8           | 1.1                     
we do not currently hedge against equity price risk . equity investments are assessed for other-than- temporary impairment on a quarterly basis. .
Question: 
what is the unrealized gain pre-tex for bm&fbovespa?
Important information:
text_4: ( in millions ) carrying unrealized net of tax .
table_1: ( in millions ) the bm&fbovespa s.a . of costbasis is $ 262.9 ; the bm&fbovespa s.a . of fairvalue is $ 690.6 ; the bm&fbovespa s.a . of carryingvalue is $ 690.6 ; the bm&fbovespa s.a . of unrealizedgainnet of tax is $ 271.4 ;
table_2: ( in millions ) the bolsa mexicana de valores s.a.b . de c.v . of costbasis is 17.3 ; the bolsa mexicana de valores s.a.b . de c.v . of fairvalue is 29.3 ; the bolsa mexicana de valores s.a.b . de c.v . of carryingvalue is 29.3 ; the bolsa mexicana de valores s.a.b . de c.v . of unrealizedgainnet of tax is 7.6 ;
Reasoning Steps:
Step: minus1-1(690.6, 262.9) = 427.7
Program:
subtract(690.6, 262.9)
Program (Nested):
subtract(690.6, 262.9)
