You can put this solution on YOUR website! logs are easy if you can remember:
the log of 100 in base 10 is 2
i.e.
and we know that 10 the power 2 is 100
which translates as
we can use those facts in reverse.
in your problem
i.e.
which translates as
i know it looks odd but its true!
and also in the other problem
translates as