{"type":"rich","version":"1.0","title":"X + 2 = BD ⇒ X = BD - 2 = 3","html":"<iframe src=\"https://www.desmos.com/calculator/ebscuqrzah?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}