7×5-12:3+20×4-92=
(10:2+41)-(17×3-32)=
2[18+3(13-9)-5]=
56×6×(81:9)-(72×2)=
21×65:7+4-9×3^2=
16:8+(42:6)+(47×4)=
35:5 -(6×3)+(25:5)+4*3=
(25:5+5)+(5×5-4)=
197
58
50
118
19
2.880
27
31
