2÷[（1/27-1/36）×9]×6 1.25×67.875+0.125×6787.5+125×0.53375．

（1）2÷[（

1

27

-

1

36

）×9]×6，
=2÷[

1

27

×9-

1

36

×9]×6，
=2÷[

1

3

-

1

4

]×6，
=2÷

1

12

×6，
=2×12×6，
=144；
（2）1.25×67.875+0.125×6787.5+125×0.53375，
=125×0.67875+125×6.7875+125×0.53375，
=125×（0.67875+6.7875+0.53375），
=125×8，
=1000．