(1-2分之1-4分之1-8分之1-16分之1-32分之1)除以64分之1
=(1-2分之1-4分之1-8分之1-16分之1-32分之1)×64
=1×64-1/2×64-1/4×64-1/8×64-1/16×64-1/32×64
=64-32-16-8-4-2
=2