1000×10%×(1-40%)×1000+500×7%×500+[1000×10%+4%]×1000
=100*60%+35*500+100000+400
=60+17500+100400
=117900+60
=117960
1000×(1-2%)2500500×(1-3%)25001000×(1-4%)2500
=980*2500500*97%*2500100*96%*2500
=980*25005*97*25001*96*2500
=2376975300*96*2500
=2376975300*140000
=232076542000000
(服了吧!)