6÷0.05=
2.4÷48= 81÷ = 7.48-(1.6+2.48)= ( )×48=
﹣1 0.00010 × 0.75×800.75×800
0.3 1﹣ ﹣﹣ 1.5÷0.61.5×
1×1÷ 12亿203000000 428