{{1, 2, 3}, {1, 2, 3}, {3, 1, -0}} * {{a, b, c}, {d, e, f}, {g, h, i}} - {{a, b, c}, {d, e, f}, {g, h, i}} * {{1, 2, 3}, {1, 2, 3}, {3, 1, -0}} = 0

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