脱式计算: 16+8÷4 (126+534)÷6 25×4+65×5 650÷5﹣428÷4 150×6﹣420÷7 270÷5+106×4
3600÷45×90
93.6÷[(54.8+45.2)×0.06]
0.8+0.55+1.2-0.45
+-
1--