Answer :
124 :
= 2+2*7+(89*0)+90+50-12-20
= 2+2*7+(0)+90+50-12-20
= 2+2*7+0+90+50-12-20
= 2+14+0+90+50-12-20
= 16+0+90+50-12-20
= 16+90+50-12-20
= 106+50-12-20
= 156-12-20
= 144-20
= 124
= 2+2*7+(89*0)+90+50-12-20
= 2+2*7+(0)+90+50-12-20
= 2+2*7+0+90+50-12-20
= 2+14+0+90+50-12-20
= 16+0+90+50-12-20
= 16+90+50-12-20
= 106+50-12-20
= 156-12-20
= 144-20
= 124