900:[34:2+(4×25-85:5)]=
900:[34:2+(100-17)]=
900:(34:2+83)=
900:(17+83)=
900:100=
9
9+12:[42-(40-32:8)]=
9+12:[42-(40-4)]=
9+12:(42-36)=
9+12:6=
9+2=11
100×[386:2+(8×25-805:5)]=
100×[193+(200-161)=
100×(193+39)=
100×232=23200
[(2×3+45:15):9+1]:2=
[(6+3)÷9+1]:2=
(9:9+1):2=
(1+1):2=
2:2=1
[(16×3+4×5):2+3]×10=
[(48+20):2+3]×10=
(68:2+3)×10=
(34+3)×10=
37×10=370