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=51/25×5.6＋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...