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:
| Year | Start | Qual | Rank | Finish | Laps |
| --- | --- | --- | --- | --- | --- |
| 1954 | 31 | 137.794 | 29 | 18 | 193.0 |
| 1955 | 29 | 135.333 | 29 | 30 | 53.0 |
| 1956 | 14 | 141.382 | 25 | 23 | 160.0 |
| 1957 | 7 | 141.777 | 12 | 29 | 51.0 |
| 1958 | 2 | 145.926 | 2 | 28 | 0.0 |
| Totals | Totals | Totals | Totals | Totals | 457.0 |
Question:
What is the finish with 51 laps?
Answer:
29.0