CREATE TABLE table_203_27 (id NUMBER, "number" NUMBER, "serial no" NUMBER, "entered service" CLOB, "withdrawn" CLOB, "kilometres travelled" NUMBER)

what serial numbers traveled more than 440,000 kilometers ?
SELECT "serial no" FROM table_203_27 WHERE "kilometres travelled" > 440000
SELECT "serial no" FROM "table_203_27" WHERE "kilometres travelled" > 440000