3:
1: =2+3^3=2+27=29
2: =2^4+3^5+2019=2019+16+243=2278
3: =5^3-3^3+7=125-27+7=125-20=105
4: =3*25-27:9+1=76-3=73
5: =3^3+8*3+64=27+64+24=115
6: =9+27-32=4
7: =9*15-9*12+1
=27+1=28
8: =111+1=112
9: =25*4+75+8
=100+83=183
10: =16*5-4=80-4=76
11: =4^2*100=1600
12: =3^2*1000-2020
=9000-2020
=6980
