Find $A^{-1}$ Of the Matrix $A=\left[\begin{array}{rrr}1 & 0 & 0 \\-3 & 1 & 6 \\5 & 0 & 1\end{array}\right]$

Essay

Find $A^{-1}$ of the matrix
$A=\left[\begin{array}{rrr}1 & 0 & 0 \\-3 & 1 & 6 \\5 & 0 & 1\end{array}\right]$