801-46×7+90:3×9=
801-322+30×9=
479+270=749
4082+3579-25×4:10=
7.661-100:10=
7.661-10=7.651
84:4+84×26-42:6=
21+2.184-7=
2.205-7=2.198
45:5×73-11×38+45=
9×73-418+45=
657-418+45=
239+45=284
5067+10×3:5-42×31=
5067+30:5-1.302=
5067+6-1.302=
5073-1.302=3.771
67×100+63:9-52×7=
6700+7-364=
6.707-364=6.343