recursive

anybody help me???
i want to solve problem java
this is question : write a program that uses a recursive method to convert a number in decimal to a base b, where b is between 2 and 36. your should prompt the user to enter the number in decimal and in the desired base.
test your program on the following data :
9098 and base 20
692 and base 2
753 and base 16


help me plz.....