He is scared and is running away from his past
To subtract vectors, you simply have to subtract correspondent coordinates.
So, if you have

the subtraction is simply

So, in your case, we have

Yeah it's true, a point has no width, hight, or depth
20,736 * 729 * 4/216 * 64 * 27 = 60,466,176/373,248 = 162
Ans : 162