Question 455074
logBASE2(logBASE2(16))=logBASE7(x) 
{{{log(2,(log(2,16))) = log(7,x)}}}
{{{log(2,(log(2,2^4))) = log(7,x)}}}
{{{log(2,4) = log(7,x)}}}
{{{log(2,2^2) = log(7,x)}}}
{{{2 = log(7,x)}}}
{{{7^2 = x}}}
{{{49 = x}}}