1) (4ac^2)^3 x (0.5a^3c)^2
64a^3 c^6 x 0.5^2 x a^6 c^2
64a^3 c^6 x (5/10)^2 x a^6 c^2
64a^3 c^6 x (2/1)^2 x a^6 c^2
64a^3 c^6 x 1/4a^6c^2
16a^3 c^6 a^6 a^2
16a^9c^8
2)-(-x^2y^4)^4*36x^8y^2
-36x(x^2y^4)^4*x^8y^2
-36x^8y^16x^8y^2
-36x^16y^18
3)8/27x^6y^9*(9x^4)^2
8/27x^6y^9*81x^8
8x^6y^9*3x^8
24x^14y^9
4)-(10a^3b^2)^5*(-(0.2ab^2)^5)
100.000a^15b^10*0.2^5*a^5b^10
100.000a^15b^10*(2/10)^5*a^5b^10
100.000a^15b^10*(1/5)^5*a^5b^10
100.000a^15b^10*1/3125a^5b^10
32a^15b^10a^5b^10
32a^20b^20