"It has come to my attention that various and sundry folk have done far better approximations of the ratio of a circle's circumference to its diameter than had been possible with my excellent 96-sided regular polygon method.
"Î¼Ï€ÏÎ¬Î²Î¿," I say (or would if this calculating engine of yours could properly handle "Unicode"). It pleases me to no end to know that the great work has continued, lo these many years since that obstreperous Italic fellow with the red cloak so rudely interrupted my research.
However, with an eternity in Hades on my hands, I have endeavored to stay busy by continuing to produce more accurate approximations. (That rake Sisyphus tells me it's a waste of time, but he is not one to talk in that regard.)
What follows is the closest approximation I have made in my posthumous calcutatory diversions. "Pi," to use your modern shorthand, is about...
Maybe the converter fails for Cyrillic? Or maybe you just don't have a Cyrillic font installed on your computer?
The following displays just fine for me: