B 4 b 2 2b 1 July 8, 2019 16 32 64 128 B 2 2b 8 4 b 3b 12 4 b 2 )- 2b 1.5b 5 2 2b 1 )+ 3 b 4 2 b 2 4 b 1 2 b+=4b