Call sign of k231bg has what sum of erp w?
CREATE TABLE table_name_30 (
    erp_w INTEGER,
    call_sign VARCHAR
)
SELECT SUM(erp_w) FROM table_name_30 WHERE call_sign = "k231bg"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: Call sign of k231bg has what sum of erp w? ### Input: CREATE TABLE table_name_30 (
    erp_w INTEGER,
    call_sign VARCHAR
) ### Response: SELECT SUM(erp_w) FROM table_name_30 WHERE call_sign = "k231bg"