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_90 (time VARCHAR, heat_rank VARCHAR)
### Question:
Tell me the total number of time for heat rank of 1
### Answer:
SELECT COUNT(time) FROM table_name_90 WHERE heat_rank = 1