The op amp in the noninverting amplifier circuit shown below has an input resistance of 400 kΩ, an output resistance of 5 kΩ, and an open-loop gain of 20, 000 . Assume that the op amp is operating in its linear region. If vg = 1 V, find the inverting input voltage, vn, and the noninverting input voltage, vp (in millivolts).