0.4÷0.2= 1÷= 406﹣299= a﹣a×0=
8.9+3.01= 1- + = 1.2×5= 3.8÷0.038=
÷ = 3604÷62≈ 0.62-0.32= 1÷10%=
( - )×24= ×8÷ ×8=
0.6+7.91+3.4+0.09 ×3+×8-
输入
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输出