Frequency (MHz) that has a Call letters of krmd-fm has what sum?
CREATE TABLE table_name_99 (
    frequency__mhz_ INTEGER,
    call_letters VARCHAR
)
SELECT SUM(frequency__mhz_) FROM table_name_99 WHERE call_letters = "krmd-fm"
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: Frequency (MHz) that has a Call letters of krmd-fm has what sum? ### Input: CREATE TABLE table_name_99 (
    frequency__mhz_ INTEGER,
    call_letters VARCHAR
) ### Response: SELECT SUM(frequency__mhz_) FROM table_name_99 WHERE call_letters = "krmd-fm"