6*2:3*7-81:9=12:21-9=0,57-9=-8.42
18+27:3*8-8*8=18+9*8-64=18+72-64=26
35:5-16:4+9*9=7-4+81=84
7*3+(28+8):6*5=21+36:6*5=21+6*5=21+30=51
4*(18:9)*7-64:8=4*2*7-8=56-8=48
80-(25:5+9):2-13=80-(5+9):2-13=80-14:2-13=80-7-13=60
2*9-36:(3*8:6)=18-36:(24:6)=18-36:4=18-9=9
4*4:2+(30-15):3=8:2+15:3=4+5=9