I want to solve $V_o$ in terms of $V_i$ from the following circuit.
$R_1=95.7 \Omega, R_2=9.1 k\Omega, R_3=1.0 M\Omega$
So the solution is form $V_o=kV_i$ and I want the factor k.
I know that:
$R_{123}=R_1+R_{23}$
and $R_{23}= 9017.94$ so the $R_{123}=9113.64\Omega$
But how do I get the factor k?