Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Name the total number of frequency Mhz for when it has ERP W of 1 and call sign of w215bj

### Inputs:
table_name: table, columns: ['Call sign', 'Frequency MHz', 'City of license', 'ERP W', 'FCC info']

### Response:
SELECT COUNT Frequency MHz FROM table WHERE ERP W = 1 AND Call sign = w215bj