1:原式=[1*(1-3^6)]/(1-3)
=(1-729)/-2
=-728/-2
=364
2:原式=[1*(1-2^7)]/(1-2)
=(1-128)/-1
=127
3:原式=3+9+15+21+27+33
=(3+33)*6/2
=36*3
=108
4:原式=1+5.3*7+0.4+0.6+1+1.2+1.6+1.8
=1+37.1+1+1+3+1.6
=38.1+6.6
=44.7
5:原式=100+200+300+400+500+600+22*6
=(100+600)*6/2+132
=700*3+132
=2100+132
=2232
6:原式=100+200+300+400+500+600+33*6
=(100+600)*6/2+198
=700*3+198
=2100+198
=2298