能简算的要简算
5.7×1.4+1.4×4.39.05﹣3.86﹣3.146.84×10.187×2.5+8.7×75．
1.59×1.9+0.41×1.9﹣1.9
18.6﹣[12﹣0.328×（18.3+6.7）]
63÷[6.5×（3.4﹣3.32）+2.98]
96.12÷[（7﹣6.46）×（43.6+56.4）]
[49.84﹣（53.17﹣14.56）÷27]÷0.47．
计算：
7.77×31.08÷7.77101×0.5920×
2.5×12.5×3.20.84÷14+0.84×
（
+
）×24．
计算．
1.8×[24.15÷（10.04﹣6.54）]=
5（x﹣1.6）=41×0.5=
3.42×4.7+0.83×34.2﹣3.42×3=
0.8+9.8+99.8+999.8+9999.8=
9.9÷0.125÷81.25×0.32×2.536.3×4.5+6.37×45 9999+999+99+9．