6 8 15 x July 8, 2019 16 32 64 128 8 15 x 5 6 8 15 x 1 6 15 8 3 6 x 5 9 15 8 3 6 x 5 7 6 8 15 phần x 1 6 8 15 x 3 5 1 6 8 15 x 5 9 6 8 x 15 18 4 6 8 x 15 6 15 x 8 3 9 5 6 x 8 15 x 3 20 6 x 8 15 5 3 8 4 6 15 x 236.25 15 x 6 8 x 2
