(6^3.8^4):12^3
=> ( 216 . 4096 ) : 1728
=> 884736 : 1728 = 512
\(\left(6^3\times8^4\right)\div12^3\)
\(=\left(216\times4096\right)\div1728\)
\(=884736\div1728\)
\(=512\)
(63×84)÷123
=(216×4096)÷1728
=884736÷1728
=512
(63 . 84) : 123
= (216 . 4096) : 1728
= 884736 : 1728
= 512