CREATE TABLE table_46491 ("Round" FLOAT, "Pick" FLOAT, "Overall" FLOAT, "Name" TEXT, "Position" TEXT, "College" TEXT)

what is the round when the college is north carolina and the overall is more than 124?
SELECT SUM("Round") FROM table_46491 WHERE "College" = 'north carolina' AND "Overall" > '124'
SELECT SUM("Round") FROM "table_46491" WHERE "College" = 'north carolina' AND "Overall" > '124'