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 | No. in season | Title | Directed by | Written by | Original air date | U.S. viewers (million) |
| --- | --- | --- | --- | --- | --- | --- |
| 47.0 | 1.0 | "Happy Fucking Birthday" | Randall Einhorn | Clyde Phillips | April14,2013 | 0.77 |
| 48.0 | 2.0 | "Luck of the Drawing" | John Cameron Mitchell | Tom Straw | April21,2013 | 0.76 |
| 49.0 | 3.0 | "Smile" | Randall Einhorn | Liz Flahive | April28,2013 | 0.69 |
| 50.0 | 4.0 | "Lost Girls" | Romeo Tirone | Michael Davidoff & Bill Rosenthal | May5,2013 | 0.73 |
| 51.0 | 5.0 | "Good Thing" | Randall Einhorn | Cindy Caponera | May12,2013 | 0.84 |
| 52.0 | 6.0 | "Walk of Shame" | Seith Mann | Abe Sylvia | May19,2013 | 0.83 |
| 53.0 | 7.0 | "Teachable Moments" | Jesse Peretz | Daniele Nathanson | May26,2013 | 0.56 |
| 54.0 | 8.0 | "Forget It" | Randall Einhorn | Gina Gold & Aurorea Khoo | June2,2013 | 0.78 |
Question:
Which episode number had a viewership of 0.56 million?
Answer:
53.0