(1)0.125×32×2.5,
=0.125×8×4×2.5,
=(0.125×8)×(4×2.5),
=1×10,
=10;
(2)0.8×6.3-0.8×3.8,
=(6.3-3.8)×0.8,
=2.5×0.8,
=2;
(3)50.4÷3.2×2.08,
=15.75×2.08,
=32.76;
(4)204÷(3.4×0.5),
=204÷1.7,
=120;
(5)(43.26+2.34)÷7.5,
=45.6÷7.5,
=6.08;
(6)(20-0.8×9)×5.7,
=(20-7.2)×5.7,
=12.8×5.7,
=72.96.