Find the remaining currents in the circuit shown given that $I_1 = 0.83 mA$, $I_2 = 0.464 mA$, $I_3 = 2 mA$, and $I_6 = -1 mA$

$I_4=$ $mA$
$I_5=$ $mA$
$I_7=$ $mA$
$I_8=$ $mA$