（0.34×2400×25%+3×7

3

8

+26.25÷

1

25

）÷25，

=（0.34×24×25+3×7

3

8

+26.25×25）×

1

25

，

=（8.16×25+22.125+26.25×25）×

1

25

，

=8.16×25×

1

25

+22.125×

1

25

+26.25×25×

1

25

，

=8.16×（25×

1

25

）+22.125×

1

25

+26.25×（25×

1

25

），

=8.16+0.885+26.25，

=9.045+26.25，

=35.29．