A 16-tooth helical pinion is to run at 1 800 rev/min and drive a helical gear on a parallel shaft at 400 rev/min. The centers of the shafts are to be spaced 11 in apart. Using a helix angle of 23◦ and a pressure angle of 20◦, determine the values for the tooth numbers, pitch radii, normal circular pitch and diametral pitch, and the face width.