1.25x66.875+1250x0.054375+125x6.7875
=1.25x(66.875+54.375+678.75)
=1.25x(121.25+678.75)
=1.25x800
=1000
原式=1.25*66.875+1.25*54.375+1.25*678.75
=1.25*(66.875+54.375+678.75)
=1.25*800
=1000
1.25×66.875+1250×0.054375+125×6.7875
=(1.25×66.875×8+1250×0.054375×8+125×6.7875×8)÷8
=(10×66.875+10000×0.054375+1000×6.7875)÷8
=(668.75+543.75+6787.5)÷8
=8000÷8
=1000