If your number was say 5280 it is easier to make it into a decimal with one number before the point:
5280 = 5.280 * 10^3
Then use a logarith table to find the logarith of 5280 which, from my table,...
The main use for a logarithm is to find an exponent. If N = a^x Then if we are told to find that exponent of the base (b) that will equal that value of N then the notation is: log N ....b And the...