csc*3pi/14
I guess this is meant to be csc(3*pi/14). Use the calculator:
$${csc}{\left({\frac{{\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{\pi}}}{{\mathtt{14}}}}\right)} = {\mathtt{85.111\: \!752\: \!545\: \!185\: \!742}}$$
Well doing this on the calculator i came up with 3*pie*csc=(14)?????