原式=1+(1-12)+(1-14)+(1-18)+(1-116)+(1-132)+(1-164)+(1-1128)
=1×8-(12+14+……+1128)
=8-(12+14+……+1128+1128-1128)
=8-(12+14+……+164+164-1128)
=……
=8-(12+12-1128)
=8-(1-1128)
=7+1128
=7又128分之1
原式=1+(1-12)+(1-14)+(1-18)+(1-116)+(1-132)+(1-164)+(1-1128)
=1×8-(12+14+……+1128)
=8-(12+14+……+1128+1128-1128)
=8-(12+14+……+164+164-1128)
=……
=8-(12+12-1128)
=8-(1-1128)
=7+1128
=7又128分之1