Computer Science Question?

Assume that a hard disk has the following characteristics:

Rotation speed = 7,200 rev/min

Arm movement time = 0.5 msec fixed startup time + 0.05 msec for each track crossed. (The startup time is a constant no matter how far the arm moves.)

Number of surfaces = 2 (This is a double-sided disk. A single read/write arm holds both read/write heads.)

Number of tracks per surface = 500

Number of sectors per track = 20

Number of characters per sector = 1024

What is the worst-case time required to read the entire contents of the disk; that is, to read every single sector on the disk? Assume the read arm is initially positioned at the beginning of the first sector of the first track, and that every track must be read from the very beginning, that is, from the very first sector on that track.