Si tu pregunta es:
$${\sqrt{{\frac{{\mathtt{25}}}{{\mathtt{8}}}}}} = {\mathtt{1.767\: \!766\: \!952\: \!966\: \!368\: \!8}}$$
Y si es:
$${\frac{{\sqrt{{\mathtt{25}}}}}{{\mathtt{8}}}} = {\frac{{\mathtt{5}}}{{\mathtt{8}}}} = {\mathtt{0.625}}$$
¿Cuál fue? (¬¬)