7.25乘67.875加725乘0.7875加7250乘0.053375简便计算
7.25X67.875+725X0.7875+7250X0.053375
=7.25X67.875+7.25X78.75+7.25X53.375
=7.25X(67.875+78.75+53.375)
=7.25X200
=1450
7.25乘67.875加725乘0.7875加7250乘0.053375简便计算
7.25X67.875+725X0.7875+7250X0.053375
=7.25X67.875+7.25X78.75+7.25X53.375
=7.25X(67.875+78.75+53.375)
=7.25X200
=1450