{"type":"rich","version":"1.0","description":"조합론 계산하기","title":"조합론 경우의 수 계산","width":720,"html":"<iframe src=\"https://arcade.padlet.com/embed/exjLAvXYpO\" width=\"720\" height=\"480\" frameborder=\"0\" allowfullscreen></iframe>","height":480,"provider_name":"Padlet Arcade","author_name":"Padlet Arcade","thumbnail_url":"https://arcade.padlet.com/open-graph/social-preview-image.png?timestamp=1786228380490&hashid=exjLAvXYpO","provider_url":"https://arcade.padlet.com"}