{"type":"rich","version":"1.0","title":"R₃ : R₂ : R₁ = 5 : 10 : 15","html":"<iframe src=\"https://www.desmos.com/calculator/pi6yegjutf?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}