Question 882255
What is the exact question and problem?  357(base 8)  has no meaning.  Do you mean 8 is the base and 357 is the base raised to some power?  Do you mean 357 is the independent variable for the logarithm function? 


{{{8^357}}}, eight to the 357 power.


{{{log(8,357)}}}, the logarithm, base 8, of 357.


Do you mean something else?