1: 347-27:3+8•6-130=347-9+48-130=338+48-130=386-130=256
2: 10•15-5•16+12:2=150-80+6=70+6=76
3: 1648+6•4:3-415•2=1648+24:3-830=1648+8-830=1648-830=810
4: 176+945-203-4•12:8=176+945-203-48:8=176+945-203-6=176+945-197=176+748= 924
5: 35:5•87•10•6-2549=7•870•6-2549=6090•6-2549=36540-2549=33991
6: 3406-28•15+80:8•27=3406-420+10•27=3406-420+270=2986+270=3256
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