Harmonics? (Use of formulas)

Hey,

I need to write a program that takes two integers(input) and implements the following formulas to output two other integers.



f2 = f*n
k = floor(lg2 (f2/440) )
starting_note = 440 * 2^k (read: 2 to the k'th power)
s = 12 * lg2 (f2/starting_note)
-------------------------------------------
f2=frequency of the n-th harmonic
f=original frequency
n=harmonic number
k=octave of the n-th harmonic of the string
s=note for frequency f2
starting_note=starting note of k

In words:

We already know that the frequency of the n-th harmonic is f2 = n * f, where f is the original frequency. The octave k of frequency f2 is floor(lg(f2/440)), where floor(x) is the greatest integer less than or equal to x and lg(x) is log to the base 2 of x. To calculate the note s for frequency f2, you must first compute the starting note of that octave by calculating starting_note = 440 * 2k. Then the actual note s = 12 * lg(f 2/ starting_note) rounded to the nearest integer.

Wanted output:
* The octave of the n-th harmonic of the string, k
* An integer in the range 0,...,11 representing a note of the scale, s

Enter the frequency of a string, f:
680
Enter the harmonic number, n:
2
The octave of harmonic 2 is 1.
The note of the scale is 8.

Now this is what I have so far:

import java.util.Scanner;

public class Harmonics {
public static void main(String args[]) {
System.out.printf("Enter the frequency of a string f:");
Scanner f = new Scanner(System.in);
double freq = Double.parseDouble(f.nextLine());
System.out.printf("Enter the harmonic number, n:");
Scanner n = new Scanner(System.in);
double harm = Double.parseDouble(n.nextLine());

}
}

That of course is the input. I need to know how to implement the formulas. I don't even know where to start. I'm thinking possibly a series of If statements?