用简便方法计算 （1）1÷32÷0.05÷0.25÷0.5 （2）1/25×5.6＋2.25×3.

1÷32÷0.05÷0.25÷0.5=1÷（32×0.05×0.25×0.5）
=1÷（2×0.05×4×0.25×4×0.5）
=1÷（0.1×1×2）
=1÷0.2
=5
1/25×5.6＋2.25×3.6
=1.25×（8×0.7）+2.25×（4×0.9）
=1.25×8×0.7+2.25×4×0.9
=10×0.7+9×0.9
=7+8.1
=15.1