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:
| № | # | Title | Directed by | Written by | Original air date | Production code | U.S. viewers (millions) |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 123.0 | 1.0 | " Lessons " | David Solomon | Joss Whedon | September24,2002 | 7ABB01 | 5.00 |
| 124.0 | 2.0 | " Beneath You " | Nick Marck | Douglas Petrie | October1,2002 | 7ABB02 | 4.97 |
| 125.0 | 3.0 | " Same Time, Same Place " | James A. Contner | Jane Espenson | October8,2002 | 7ABB03 | 4.90 |
| 126.0 | 4.0 | " Help " | Rick Rosenthal | Rebecca Rand Kirshner | October15,2002 | 7ABB04 | 5.04 |
| 127.0 | 5.0 | " Selfless " | David Solomon | Drew Goddard | October22,2002 | 7ABB05 | 5.02 |
| 128.0 | 6.0 | " Him " | Michael Gershman | Drew Z. Greenberg | November5,2002 | 7ABB06 | 4.65 |
| 129.0 | 7.0 | " Conversations with Dead People " | Nick Marck | Jane Espenson & Drew Goddard | November12,2002 | 7ABB07 | 4.83 |
| 130.0 | 8.0 | " Sleeper " | Alan J. Levi | David Fury & Jane Espenson | November19,2002 | 7ABB08 | 5.03 |
| 131.0 | 9.0 | " Never Leave Me " | David Solomon | Drew Goddard | November26,2002 | 7ABB09 | 4.83 |
| 132.0 | 10.0 | " Bring on the Night " | David Grossman | Marti Noxon and Douglas Petrie | December17,2002 | 7ABB10 | 4.80 |
| 133.0 | 11.0 | " Showtime " | Michael Grossman | David Fury | January7,2003 | 7ABB11 | 4.08 |
| 134.0 | 12.0 | " Potential " | James A. Contner | Rebecca Rand Kirshner | January21,2003 | 7ABB12 | 3.61 |
| 135.0 | 13.0 | " The Killer in Me " | David Solomon | Drew Z. Greenberg | February4,2003 | 7ABB13 | 3.46 |
| 136.0 | 14.0 | " First Date " | David Grossman | Jane Espenson | February11,2003 | 7ABB14 | 4.24 |
| 137.0 | 15.0 | " Get It Done " | Douglas Petrie | Douglas Petrie | February18,2003 | 7ABB15 | 3.43 |
| 138.0 | 16.0 | " Storyteller " | Marita Grabiak | Jane Espenson | February25,2003 | 7ABB16 | 3.60 |
| 139.0 | 17.0 | " Lies My Parents Told Me " | David Fury | David Fury & Drew Goddard | March25,2003 | 7ABB17 | 3.44 |
| 140.0 | 18.0 | " Dirty Girls " | Michael Gershman | Drew Goddard | April15,2003 | 7ABB18 | 3.31 |
| 141.0 | 19.0 | " Empty Places " | James A. Contner | Drew Z. Greenberg | April29,2003 | 7ABB19 | 3.60 |
| 142.0 | 20.0 | " Touched " | David Solomon | Rebecca Rand Kirshner | May6,2003 | 7ABB20 | 4.02 |
| 143.0 | 21.0 | " End of Days " | Marita Grabiak | Douglas Petrie and Jane Espenson | May13,2003 | 7ABB21 | 4.06 |
Question:
What was the number of episodes whose production code is 7ABB21?
Answer:
1.0