( )除以80=24/( )=( )/24=0.75

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( )除以80=24/( )=( )/24=0.75

( )除以80=24/( )=( )/24=0.75
( )除以80=24/( )=( )/24=0.75

( )除以80=24/( )=( )/24=0.75
(60 )除以80=24/(32 )=(18 )/24=0.75
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(60 )除以80=24/(32)=(18)/24=0.75