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Fill the grid so that each row, column and 3 x 3 box contains the digits 1 to 9 exactly once, and in the nine 3 x 3 boxes, both the sums of the circled cells and the averages of the yellow cells are the numbers 1 to 9, each appearing exactly once.
Answer format: Provide the completed 9 x 9 grid either as a drawing or as a 27-digit sequence formed by reading the first, fourth and seventh columns from top to bottom.
Please note that only your first submission will be considered.