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_89 (category_1 INTEGER, category_3 VARCHAR)
### Question:
What's the sum of all values in category 1 when category 3 is equal to 300?
### Answer:
SELECT SUM(category_1) FROM table_name_89 WHERE category_3 = "300"