Find the square root by division method :
$9409$

Find the smallest number by which the following should be multiplied in order to get a perfect square :

$600$

Find the smallest number by which the following should be multiplied in order to get a perfect square :

$2178$

Find the smallest number by which the following should be divided to get a perfect square :

$648$

Find the smallest number by which the following should be divided to get a perfect square :

$8064$