Tìm $\left | -2022\right |; \left | \sqrt{312}\right |; \left | -\sqrt{5.4} \right |; \left | \frac{-273}{2} \right |; \left |-20.21 \right |.$

$\left | -2022\right | = 2022;$

$\left | \sqrt{312}\right | = \sqrt{312}$;

$ \left | -\sqrt{5.4} \right | = \sqrt{5.4} ;$

$\left | \frac{-273}{2} \right | = \frac{273}{2}; $

$\left |-20.21 \right | = 20.21.$