Find the square root of the following number using the division method.

$7.29$

Find the square root of the following number using the division method.

$116.64$

Find the square root of the following number using the division method.

$0.000144$

Find the square root of the following number using the division method.

$6.5536$

Find the least number that should be subtracted from the given number to get a perfect square.

$4401610$

Find the least number that should be subtracted from the given number to get a perfect square.

$363636$

Find the least number that should be subtracted from the given number to get a perfect square.

$531440$

Find the least number that should be subtracted from the given number to get a perfect square.

$2000$

Find the least number that should be subtracted from the given number to get a perfect square.

$99999$