{"type":"rich","version":"1.0","title":"R₅ = 6 / 7 = 0.857142857143","html":"<iframe src=\"https://www.desmos.com/calculator/5fbusfxsny?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}