14 1 4 x 20 July 8, 2019 16 32 64 128 14 1 4 x 20 propeller 1 4 x 3 14 x 20 1 3 4 x 14 x 20 lvl Hasil dari 14 3 x 1 4 20 (- 2 1 2x 4 x 2 )= 14 2x 20 14 1/2 x 4
