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_21 (production_number VARCHAR, series VARCHAR, title VARCHAR)
### Question:
What is the production number for Bell Hoppy in the MM Series?
### Answer:
SELECT COUNT(production_number) FROM table_name_21 WHERE series = "mm" AND title = "bell hoppy"