Find $V_o$ in the circuit shown given that $V_1 = 2 V$, $V_2 = 5 V$, $V_3 = 2 V$, $R_1 = 25 k\Omega$, $R_2 = 29 k\Omega$, $R_3 = 18 k\Omega$, $R_4 = 10 k\Omega$, $R_5 = 23 k\Omega$, and $R_6 = 32 k\Omega$.

$I_1=$ $mA$
$V_{o1}=$ $V$
$I_2=$ $mA$
$V_o=$ $V$