CREATE TABLE table_203_726 (id DECIMAL, "year" DECIMAL, "national champion" TEXT, "score" TEXT, "runner-up" TEXT, "host or site" TEXT)

in total , how many times has stanford won the national championship ?
SELECT COUNT(*) FROM table_203_726 WHERE "national champion" = 'stanford'
SELECT COUNT(*) FROM "table_203_726" WHERE "national champion" = 'stanford'