Heptagon - Rotational Symmetry

How many times does a REGULAR HEPTAGON rotate onto itself until it is back to the beginning? Include the rotation 360°. Please Note: This software, at the time this question was created, does not actually check if your response is correct. It is up to you to compare your response to the correct answer.

List all rotational symmetries for a REGULAR HEPTAGON. Separate each measurement with a comma. You may use an " * " or "d" to represent degrees. IE: 360 degrees, should be entered as 300* or 300d. You may also use the function editor to insert a degree symbol " ° ". Please Note: This software, at the time this question was created, does not actually check if your response is correct. It is up to you to compare your response to the correct answer.