pliss no.1 e pke caranya

(3^7 . 7^3 . 2) / (42)^3
= (3^7 . 7^3 . 2) / (3 . 7 . 2)^3
= (3^7 . 7^3 . 2) / (3^3 . 7^3 . 2^3)
= (3^7 . 2) / (3^3 . 2^3)
= 3^(7 - 3) . 2^(1 - 3)
= 3^4 . 2^-2
= 3^4 / 2^2
= 81 / 4