If $\sqrt{5} = 2.236$,then the value of $\frac{1}{\sqrt{5}}$ is

$8787 \div 343 \times \sqrt{50} = ?$

In the following questions,two equations numbered $I$ and $II$ are given. You have to solve both the equations and give the answer.
$I: \frac{13}{\sqrt{x}} + \frac{9}{\sqrt{x}} = \sqrt{x}$
$II: y^4 - \frac{(13 \times 2)^{9/2}}{\sqrt{y}} = 0$

If $0.13 \div p^{2} = 13$,then $p$ equals

$\sqrt{0.01+\sqrt{0.0064}}=?$

$(15.01)^{2} \times \sqrt{730} = ?$