70÷(1﹣86%) 25%×48×12.5×4 [13﹣(38.2﹣36)]÷7.2
12.5×32×15
98.2÷2.5÷0.4
3.14×4= 1.5×1.5=
1÷0.1= 0.52=
9÷ ×6= 7.8+3.22=
4:0.5= 25×4÷25×4=