SELECT COUNT(population__hervey_bay_) FROM table_name_94 WHERE population__woocoo_ < 640 AND population__maryborough_ < 19 OFFSET 257
Sebutkan jumlah total populasi Hervey Bay dengan populasi woocoo kurang dari 640 dan populasi Maryborough kurang dari 19.257
CREATE TABLE table_name_94 (population__hervey_bay_ VARCHAR, population__woocoo_ VARCHAR, population__maryborough_ VARCHAR)