A square loop of sides $a = 1\;{\rm{m}}$ is held normally in front of a point charge ${\rm{q}} = 1{\rm{C}}$. The flux of the electric field through the shaded region is $\frac{5}{p} \times \frac{1}{{{\varepsilon _0}}}\frac{{{\rm{N}}{{\rm{m}}^2}}}{{\rm{C}}}$, where the value of p is________.