CREATE TABLE table_name_9 (round VARCHAR2, opponent VARCHAR2, date VARCHAR2)

What round did the celtic played away on 24 february 1900?
SELECT round FROM table_name_9 WHERE opponent = "celtic" AND date = "24 february 1900"
SELECT "round" FROM "table_name_9" WHERE "24 february 1900" = "date" AND "celtic" = "opponent"