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_11071897_1 (interregnum_ended VARCHAR, duration VARCHAR)
### Question:
What is the number of interregnum for duration 3 months, 6 days?
### Answer:
SELECT COUNT(interregnum_ended) FROM table_11071897_1 WHERE duration = "3 months, 6 days"