Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_1 (population__region_total_ INTEGER, year VARCHAR, population__mareeba_ VARCHAR)
### Question:
What was the sum total of the region after 1976 when Mareeba had population was more than 18,212?
### Answer:
SELECT SUM(population__region_total_) FROM table_name_1 WHERE year > 1976 AND population__mareeba_ > 18 OFFSET 212