6 x 3 2 x 7 8 4 9 July 8, 2019 16 32 64 128 9 8 7 x 6 5 4 3 2 x 1 ) 2 3 x 4 5 x 6 7 x 8 9 6 7 x - 4 83 = 5 22 (2–6 • 4–3) / 8–7
