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:
| Position | Team | Points | Played | Won | Drawn | Lost | For | Against | Difference |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | Paulistano | 30 | 18 | 14 | 2 | 2 | 62 | 19 | 43 |
| 2 | Palestra Itália-SP | 29 | 18 | 14 | 1 | 3 | 59 | 21 | 38 |
| 3 | Corinthians | 26 | 18 | 12 | 2 | 4 | 51 | 16 | 35 |
| 4 | Ypiranga-SP | 25 | 18 | 11 | 3 | 4 | 56 | 34 | 22 |
| 5 | AA São Bento | 16 | 18 | 7 | 2 | 9 | 38 | 44 | -6 |
| 6 | Santos | 13 | 18 | 6 | 1 | 11 | 36 | 43 | -7 |
| 7 | SC Internacional de São Paulo | 11 | 15 | 3 | 5 | 7 | 26 | 44 | -18 |
| 8 | Minas Gerais | 10 | 15 | 4 | 2 | 9 | 18 | 49 | -31 |
| 9 | AA das Palmeiras | 6 | 15 | 3 | 0 | 12 | 27 | 57 | -30 |
| 10 | Mackenzie | 2 | 15 | 1 | 0 | 14 | 11 | 57 | -46 |
Question:
how many teams played 18 games?
Answer:
6