{"type":"rich","version":"1.0","title":"R = 15 / 4. b = 5 / 3. a = 3 / 4","html":"<iframe src=\"https://www.desmos.com/calculator/a1onss7lnc?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}