Additional music questions

Consider concert A - 440 Hz.  Find the following:

1.  The frequencies of the next two A's, one and two octaves above.

2.  The frequency of the A below concert A.

3.  The frequency of A#, one semi-tone (piano key or guitar fret) above concert A.

4.  The frequency of C, 3 semi-tones above A.

5.  The wavelength of the 440 Hz sound wave, assuming that the speed of sound is 340 m/s.