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:
| Round | Pick | Overall | Name | Position | College |
| --- | --- | --- | --- | --- | --- |
| 1.0 | 7.0 | 7.0 | Larry Isbell | RB | Baylor |
| 2.0 | 6.0 | 19.0 | Andy Davis | DB | George Washington [b ] |
| 3.0 | 6.0 | 31.0 | Al Dorow | QB | Michigan State |
| 4.0 | 6.0 | 43.0 | Dick Hightower | C | Southern Methodist |
| 5.0 | 6.0 | 55.0 | Jim Clark | OT | Oregon State |
| 6.0 | 6.0 | 67.0 | Ed Kensler | G | Maryland |
| 7.0 | 6.0 | 79.0 | Vic Janowicz | HB | Ohio State |
| 8.0 | 6.0 | 91.0 | Hubert Johnston | OT | Iowa |
| 9.0 | 6.0 | 103.0 | Dick Alban | DB | Northwestern |
| 10.0 | 6.0 | 115.0 | Chet Ostrowski | DE | Notre Dame |
| 11.0 | 6.0 | 127.0 | Orlanda Mazza | E | Michigan State |
| 12.0 | 6.0 | 139.0 | Frank Middendorf | C | Cincinnati |
| 13.0 | 6.0 | 151.0 | Ray Potter | OT | Louisiana State |
| 14.0 | 6.0 | 163.0 | Doug Conway | OT | Texas Christian |
| 15.0 | 6.0 | 175.0 | Julius Wittman | OT | Ohio State |
| 16.0 | 6.0 | 187.0 | Marv Berschet | G | Illinois |
| 17.0 | 6.0 | 199.0 | Gil Bocetti | RB | Washington & Lee |
| 18.0 | 6.0 | 211.0 | Ed Bartlett | E | California |
| 19.0 | 6.0 | 223.0 | Joe Marvin | RB | UCLA |
| 20.0 | 6.0 | 235.0 | Roger Kinson | C | Missouri |
| 21.0 | 6.0 | 247.0 | Dick Jenkins | OT | Illinois |
| 22.0 | 6.0 | 259.0 | Jim O'Rourke | RB | North Carolina State |
| 23.0 | 6.0 | 271.0 | Ken Barfield | OT | Mississippi |
| 24.0 | 6.0 | 283.0 | Ted Kirkland | E | Vanderbilt |
| 25.0 | 6.0 | 295.0 | Sal Gero | OT | Elon |
| 26.0 | 6.0 | 307.0 | Danny Goode | RB | Hardin-Simmons |
| 27.0 | 6.0 | 319.0 | Ben White | E | Southern Methodist |
| 28.0 | 6.0 | 331.0 | Ron Engel | RB | Minnesota |
| 29.0 | 6.0 | 343.0 | John Pappa | RB | California |
| 30.0 | 6.0 | 355.0 | Bob Linn | RB | Case Western |
Question:
What is the sum of Overall, when Round is less than 24, and when College is North Carolina State?
Answer:
259.0