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_23 (investment_earnings VARCHAR, total_revenue VARCHAR)
### Question:
What were the investment earnings in a year when total revenue was $21,779,618?
### Answer:
SELECT investment_earnings FROM table_name_23 WHERE total_revenue = "21,779,618"