Question 7777
Let's see...{{{((3abc^2)/(7a^2b))^4}}} = {{{(81a^4b^4c^8)/(2401a^8b^4)}}} ={{{(81c^8)/(2401a^4)}}} or, 

{{{((3abc^2)/(7a^2b))^4}}} = {{{((3c^2)/(7a))^4}}} = {{{(81c^8)/(2401a^4)}}}