Answer:
Four fingers and a thumb, yet flesh and blood I have none. What am I?
I live above a star who never burns. I have 11 neighbors but they never turn. My initials are p q r and sometimes s.
Sometimes I fly as fast as the speed of light. Sometime I crawl as slow as a snail. Unknown until I am measured but you will certainly miss me when Iām gone.
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty. What am I?
Of these things - I have two. One for me - and one for you. And when you ask about the price I simply smile and nod twice.
No matter how little or how much you use me, you change me every month.