For the given circuit, the switch is closed for a long time and then opened at t=0. R1 = 0.5 kΩ, R2 = 110 Ω, L = 9 H, V = 7 V, and V = 18 Volts are given. Calculate the inductor current at t = 12 seconds. IL(t=1.2) = ? (Your result must be in mA) Only give numeric results. (If you found 9 mA, write down 2)