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:
| No. in series | Title | Directed by | Written by | Original air date | U.S. viewers (millions) |
| --- | --- | --- | --- | --- | --- |
| 2.0 | "In Which Sam Receives an Unexpected Visitor" | Tony Goldwyn | Mike Ostrowski | October3,2007 | 12.30 |
| 3.0 | "In Which Addison Finds the Magic" | Mark Tinker | Shonda Rhimes & Marti Noxon | October10,2007 | 12.40 |
| 4.0 | "In Which Addison Has a Very Casual Get Together" | Arvin Brown | Andrea Newman | October17,2007 | 11.81 |
| 5.0 | "In Which Addison Finds a Showerhead" | Julie Anne Robinson | Shonda Rhimes & Marti Noxon | October24,2007 | 11.77 |
| 6.0 | "In Which Charlotte Goes Down the Rabbit Hole" | David Solomon | Jenna Bans | October31,2007 | 11.21 |
| 7.0 | "In Which Sam Gets Taken For a Ride" | Jeff Melman | Emily Halpern | November14,2007 | 11.45 |
| 8.0 | "In Which Cooper Finds a Port In His Storm" | Mark Tinker | Lauren Schmidt | November21,2007 | 8.44 |
Question:
How many writers are listed when the U.S viewers are 11.21 million?
Answer:
1.0