As of what the first guest, i has four different stages. These stages are i, -1, -i, 1.Through these stages, we can see that i + 2i2 + 3i3 + 4i4 is equal to 2 - 2i. As we continue to 8i8, the answer is 4 - 4i. We can see a pattern, which is that for each four stages, we get 2 - 2i, no matter what. 64 / 4 is 16, so therefore the answer is 16 * (2 - 2i), or 32 - 32i.