Here we're dividing, but what actually happens is that we get the " i " out of the denominator:
104i 104i 3-i 312i + 104 312i + 104
------- = --------- * -------- = --------------- = ----------------
3+i 3+i 3-i 9+1 10
Note that 3-i is the "conjugate" of 3+i.
