a) [(-3)^2*(-3)*2-(-3)^4]:3^8=
[9*9-81]:6561=
[81-81]:6561=
0:6561=0
b) [(-8)^12:(-8)^11]^2=
[68719476736:(-8589934592)]^2=
-8^2=64
c) [(-24):(-8)+(-2)-(+5)]*[(-45):(+9)+7}=
[3+(-2)-(+5)]*[-5+7]=
[1-5]*2=
-4*2=-8
d)[(-4)*(-5)+(-3)^15:(-2)^3]*(-2+(-3)=
[(-4)*(-5)+(-14348907):(-8)]*(-5)=
[20+1793613,375]*(-5)=
1793633,375*(-5)=-8968166,875