(68:4+13):6+((85-28):3+72:(6*3)-11))*18-189=32
1) (68:4+13):6=(17+13):6=30:6=5
2) (85-28):3=57:3=19
3) 72:(6*3)=72:18=4
4) 19+4-11=12
5)12*18=216
6)5+216=221
7) 221-189=32
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(68:4+13):6+((85-28):3+72:(6*3)-11))*18-189=32
1) (68:4+13):6=(17+13):6=30:6=5
2) (85-28):3=57:3=19
3) 72:(6*3)=72:18=4
4) 19+4-11=12
5)12*18=216
6)5+216=221
7) 221-189=32