what is pi over two divided by 4
$${\frac{\left({\frac{{\mathtt{\pi}}}{{\mathtt{2}}}}\right)}{{\mathtt{4}}}} = {\mathtt{0.392\: \!699\: \!081\: \!698\: \!724\: \!2}}$$
$${\frac{\left({\frac{{\mathtt{3.14}}}{{\mathtt{2}}}}\right)}{{\mathtt{4}}}} = {\frac{{\mathtt{157}}}{{\mathtt{400}}}} = {\mathtt{0.392\: \!5}}$$