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:
| Call sign | Frequency MHz | City of license | ERP W | Class | FCC info |
| --- | --- | --- | --- | --- | --- |
| KGKD | 90.5 | Columbus, Nebraska | 10000.0 | C2 | FCC |
| KGRJ | 89.9 | Chamberlain, South Dakota | 21500.0 | C3 | FCC |
| KGRH | 88.1 | Loomis, South Dakota | 800.0 | A | FCC |
| K205CU | 88.9 | Burwell, Nebraska | 235.0 | D | FCC |
| K217CT | 91.3 | Ainsworth, Nebraska | 222.0 | D | FCC |
| K220FV | 91.9 | Yankton, South Dakota | 140.0 | D | FCC |
| K222AL | 92.3 | Platte, South Dakota | 75.0 | D | FCC |
Question:
What is the sum of the erp w of the k222al call sign?
Answer:
75.0