CREATE TABLE table_204_668 (id DECIMAL, "#" DECIMAL, "menteri besar" TEXT, "took office" TEXT, "left office" TEXT, "party" TEXT)

what is the number of menteri besar that served 4 or more years ?
SELECT COUNT("menteri besar") FROM table_204_668 WHERE "left office" - "took office" >= 4
SELECT COUNT("menteri besar") FROM "table_204_668" WHERE "left office" - "took office" >= 4