[X]补=10111，求[X/2]补;[X]补=1.1100100,求[2X]补，[X/2]补

[X/2]补=1/2[X]补=5055.5

[2X]补=2[X]补=2×1.1100100=2.2200200   [X/2]补=1/2[X]补=1/2×1.1100100=0.55500500