I am confusing about how to draw the queue with the given operation. I know that the queue is "first in first out". However, I am confused about how to draw it.

6) [4] Given the following contents of a circular array implementation of a queue 0 2 3 4 5 20 30 40 first last Show the contents of the queue and locations of first and last after doing the following: Queue.dequeue ); Queue.dequeue (); Queue.enqueue (50); Queue.enqueue (60); Queue.enqueue (70); Queue.dequeue ); Queue.enqueue (80) 0 2 4