Please answer

This is a special decimal called the golden ratio.

Anyway, $\frac{1+\sqrt{5}}{2}\approx1.6180339887498948482045868343656381177203091798057628621354486227052604628189024497072072041893911374847540880753...$ 

$\frac{1+\sqrt{5}}{2}$

$\frac{1}{2}+\frac{\sqrt{5}}{2}$

$0.5+\frac{\sqrt{5}}{2}$

$0.5+\frac{2.2360679774997896964091736687...}{2}$

$0.5+1.1180339887498948482045868343...$

$1.618034...$