2 5 x 40 )=- 4 July 8, 2019 16 32 64 128 5 x 40 2 45 720 41 2 x 5 40 4 5 2 x 11 40 2 x 40 4 x 5 /( 2 x 45 5 x + 40 chia 2 = 45 720 chia 41 2 x 5 40 2 5 x 4 69 x 40 2 x 2 5