CREATE TABLE table_61698 ("Goalkeeper" TEXT, "Goals" FLOAT, "Matches" FLOAT, "Average" FLOAT, "Team" TEXT)

What is the total of Matches with Goals of 18, and an Average larger than 0.55?
SELECT SUM("Matches") FROM table_61698 WHERE "Goals" = '18' AND "Average" > '0.55'
SELECT SUM("Matches") FROM "table_61698" WHERE "Average" > '0.55' AND "Goals" = '18'