CREATE TABLE table_51198 ("Call sign" TEXT, "Frequency MHz" FLOAT, "City of license" TEXT, "ERP W" FLOAT, "Class" TEXT, "FCC info" TEXT)

What is the total Frequency MHz Port Charlotte, Florida, which has an ERP W larger than 10, has?
SELECT COUNT("Frequency MHz") FROM table_51198 WHERE "City of license" = 'port charlotte, florida' AND "ERP W" > '10'
SELECT COUNT("Frequency MHz") FROM "table_51198" WHERE "City of license" = 'port charlotte, florida' AND "ERP W" > '10'