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_23180638_1 (peak_position VARCHAR, oricon_albums_chart VARCHAR)
### Question:
How many peak positions were there on the weekly charts?
### Answer:
SELECT COUNT(peak_position) FROM table_23180638_1 WHERE oricon_albums_chart = "Weekly Charts"