Chess Math Puzzles

Hi, I dunno if this is an original idea but I made some chess math puzzles.  Potentially cool way to practice arithmetic and chess tactics at the same time.

Is this really not interesting to anyone?

Place 5 queens on a chess board such that the queens control all squares on the board.

1:

Nd6-Rc3-Nb5

2:
Rc8-Rg8-Rg6-Rh6-f5

@OliBurt: It's a nice idea but you have to explain more about the rules. For instance "does every move have to be part of the arithmetic formula?"

In that case the solution to the 2nd diagram might be: Pf5 (3) Pf6 (+) Rf5 (3) Bh6 (x) Bg5 (3) = 12.

But also; Rf5 (3) Rf6 (+) Pf5 (3) Bh6 (x) Bg5 (3) = 12. And there is a third solution as well.

Are both correct? Neither? Explain!