Find the value of the following expression:

$\left|12.3-7.8\right|$

Find the value of the following expression:

$\left|-\frac{2}{9}\right|$

Find the value of the following expression:

$\left|{\left(-2\right)}^5\right|$

Find the value of the following expression:

$\left|\sqrt{27}\right|$

Find the value of the following expression:

$-\left|-\sqrt{81}\right|$

Find the value of the following expression:

$\left|4\right|\times \left|-5\right|$

Find the value of the following expression:

$-\left|-{\left(-6\right)}^2\right|$

Find the value of the following expression:

$\frac{\left|6\right|}{-\left|12\right|}$

Find the value of the following expression:

$\left|\frac{-27}{-6}\right|$