Question 894010
Not many people would or be expected to perform basic elementary arithmetic to compute {{{16^18}}}.  What you are missing is logarithmic and exponential functions, and computers.


You can also make use of laws of exponents.

{{{16=2^4}}}, a basic commonly known fact.


{{{16^18=(2^(4))^18}}}
{{{2^(4*18)}}}
{{{highlight_green(2^72)}}}



But one reason it would not be done by hand is because the product will have too many digits causing long labor and likelihood of mistakes.


TRIED A CHECK THROUGH GOOGLE:
{{{4.7223665*10^21}}}


If this were to be a test question, you would either use a portable hand calculator or use a table of logarithms.  A computation like this will NOT be done to the nearest whole value.