2=1.06^n
log2 = log1.6^n
log2 = n*log1.6
log2/log1.6 = n
then you do it on your calculator and get n is approx = 1.474769847
If you have not studied logs yet this will not make any sense.
I had a quick look on the internet to see if I could find a site that will help.
There a lots of sites for people with a basic understanding but I didn't find an intro site.
Basically though, a log is an exponent (I'd call it a power but exponent seems to be the more international name.)
anyway, I hope this was of some interest to you.
+118654 
