Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Quarter | Android | iOS | Symbian | BlackBerry OS | Linux | Windows Phone | Other | Total |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2013 Q2 | 187.4 | 31.2 | 0.5 | 6.8 | 1.8 | 8.7 | 0.0 | 236.4 |
| 2013 Q1 | 162.1 | 37.4 | 1.2 | 6.3 | 2.1 | 7.0 | 0.1 | 216.2 |
| 2012 Q4 | 159.8 | 47.8 | 2.7 | 7.4 | 3.8 | 6.0 | 0.3 | 227.8 |
| 2012 Q3 | 136.0 | 26.9 | 4.1 | 7.7 | 2.8 | 3.6 | 0.0 | 181.1 |
| 2012 Q2 | 104.8 | 26.0 | 6.8 | 7.4 | 3.5 | 5.4 | 0.1 | 154.0 |
| 2012 Q1 | 89.9 | 35.1 | 10.4 | 9.7 | 3.5 | 3.3 | 0.4 | 152.3 |
| 2011 Q4 | 83.4 | 36.3 | 18.3 | 12.8 | 3.8 | 2.4 | 0.8 | 157.8 |
| 2011 Q3 | 67.7 | 16.3 | 17.3 | 11.3 | 3.9 | 1.4 | 0.1 | 118.1 |
| 2011 Q2 | 50.8 | 20.4 | 18.3 | 12.5 | 3.3 | 2.5 | 0.6 | 108.4 |
Question:
How many millions of Blackberry OS smartphones were shipped when 10.4 million Symbian smartphones were shipped?
Answer:
9.7