user: Question: Frequency (MHz) that has a Call letters of KRMD-FM has what sum?
Columns: ['Frequency (MHz)', 'Call letters', 'Licensed location', 'Type', 'Format']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [88.7, 'KZLO', 'Kilgore', 'Translator of K-LOVE', 'Contemporary Christian']
SQL:

assistant: SELECT SUM("Frequency (MHz)") FROM "Table" WHERE "Call letters" = 'KRMD-FM';