There are many results. Let me calculate some:

1, the number is 100.

12*34/(56+80)+97= 100, 12+(34+56)/90+87= 100

12-34/(56-90)+87= 100, 12*(34+58-90)+76= 100

( 12-34)*(59-60)+78= 100,( 12-34)/(59-60)+78= 100

( 12-34)*50/(68-79)= 100,( 12-34)*50/(86-97)= 100

12*34/(50+86)+97= 100,( 12-34)/(68-79)*50= 100

12+34+69+70-85= 100, 12+34+69-85+70= 100

12+34+60+79-85= 100, 12+34+60-85+79= 100

12-34-60+85+97= 100, 12-34-60+87+95= 100

12-34-60+95+87= 100, 12-34-60+97+85= 100

12*(34+76-95)-80= 100, 12-(34+78)/56+90= 100

( 12-34-78)*(59-60)= 100,( 12-34-78)/(59-60)= 100

12+34+79+60-85= 100, 12+34+79-85+60= 100

12+34+70+69-85= 100, 12+34+70-85+69= 100

12+34-85+69+70= 100, 12+34-85+60+79= 100

12-34+85-60+97= 100, 12+34-85+79+60= 100

12+34-85+70+69= 100, 12-34+85+97-60= 100

12*34/(86+50)+97= 100,( 12-34)/(86-97)*50= 100

12-34+87-60+95= 100, 12-34+87+95-60= 100

12*34/(80+56)+97= 100, 12-34+95-60+87= 100

12*(34-95+76)-80= 100, 12-34+95+87-60= 100

12-34+97-60+85= 100, 12-34+97+85-60= 100

12-34*98+57*60= 100, 12-34*98+60*57= 100

12+34/(90-56)+87= 100, 12-(34-90)/56+87= 100

12*(34-90+58)+76= 100, 12+35+49-76+80= 100

12*(35+49-70)-68= 100, 12+35+49+80-76= 100

12+35+40-76+89= 100, 12*(35+40)/(78-69)= 100

12+35+40+89-76= 100, 12*(35+40)/(96-87)= 100

12+35+67+80-94= 100, 12+35+67-94+80= 100

12+35+60+87-94= 100, 12+35+60-94+87= 100

12+35-76+49+80= 100, 12+35-76+40+89= 100

12+35-76+89+40= 100, 12+35-76+80+49= 100

2, the number is 6 1:

12/(34-58)*70+96=6 1, 12-34+68-75+90=6 1, 12-34+68+90-75=6 1

12/(34-69)*70+85=6 1, 12-34+60-75+98=6 1, 12-34+60+98-75=6 1

12-34-75+68+90=6 1, 12-34-75+60+98=6 1, 12-34-75+98+60=6 1

12-34-75+90+68=6 1,( 12*34+80)/(67-59)=6 1,( 12-(34-98)*57)/60=6 1

12-34+98+60-75=6 1, 12-34+98-75+60=6 1, 12-34+90+68-75=6 1

12-34+90-75+68=6 1, 12-35+68-74+90=6 1, 12-35+68+90-74=6 1

12+35*(69-70)+84=6 1, 12+35/(69-70)+84=6 1, 12-35-(69-70)*84=6 1

12-35+60-74+98=6 1, 12-35+60+98-74=6 1, 12-35-74+68+90=6 1

12-35-74+60+98=6 1, 12-35-74+98+60=6 1, 12-35-74+90+68=6 1

12/35*70-49+86=6 1, 12-35+(70-69)*84=6 1, 12-35*(70-69)+84=6 1

( 12-35)*(70-69)+84=6 1, 12-35/(70-69)+84=6 1,( 12-35)/(70-69)+84=6 1

12/35*70+86-49=6 1, 12+(35-84)*(69-70)=6 1, 12+(35-84)/(69-70)=6 1

12-35-84*(69-70)=6 1, 12-35-84/(69-70)=6 1, 12-35+84*(70-69)=6 1

( 12-35+84)*(70-69)=6 1, 12-35+84/(70-69)=6 1,( 12-35+84)/(70-69)=6 1

12-(35-84)*(70-69)=6 1, 12-(35-84)/(70-69)=6 1, 12-35+98+60-74=6 1

12-35+98-74+60=6 1, 12*(35+98)/76+40=6 1, 12*35/(98-70)+46=6 1

12-35+90+68-74=6 1, 12-35+90-74+68=6 1, 12/36*(48-90)+75=6 1

( 12*36-40)/98+57=6 1, 12/36*57-48+90=6 1, 12/36*57+90-48=6 1