Create a recursive method that mirrors how a logarithm works in math. You can have the base by default by ten. You do not have to deal with decimals, just worry about returning integers.

Note: logarithms return the power that you raise a base number to in order to get a number.

Ex: Logarithm of 9 to base 3 = 2; In this example, since 3 to the second power gives you 9, the logarithm of 9 to base 3 is equal to 2.