I have the following circuit with the question, what is VR2. Now, it appears to me that in this respect the circuit should work just as any simpler voltage divider. However, I am very uncertain if this is correct and would very much appreciate any feedback.
Thanks in advance!

(apologies for the lousy sketch, doing it on the way on my Samsung note
)
Thanks in advance!

(apologies for the lousy sketch, doing it on the way on my Samsung note
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