CREATE TABLE table_77228 ("Call sign" TEXT, "Frequency MHz" FLOAT, "City of license" TEXT, "ERP W" FLOAT, "Class" TEXT, "FCC info" TEXT)

What is the Sum of ERP W, when Call Sign is K216GA?
SELECT SUM("ERP W") FROM table_77228 WHERE "Call sign" = 'k216ga'
SELECT SUM("ERP W") FROM "table_77228" WHERE "Call sign" = 'k216ga'