256 divided by 8 divieded by 8 divided by 1/2

256 ÷ 8 = 32

32 ÷ 8 = 4
4 ÷ 1/2 = 4 ÷ 0.5 = 8

So, 256 divided by 8 divided by 8 divided by 1/2 equals 8.