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Put one digit from 1–9 in each square of this Sudoku so that the following two conditions are met: 1) each row, column, and 3-x-3 box (as marked by shading in the grid) contains the digits 1–9 exactly one time, and 2) the sum of the numbers in each area marked off by heavy black lines totals the little number given in each of those areas. For example, the digits in the upper-leftmost square in the grid and the square directly to the right of it will add up to 7. Now solve!