This means CDs should have ~800MB of usable space. Why only 700MB?<p><pre><code>    705600 * 2 = 1411200              # bits&#x2F;s for stereo channel
    80 * 60 = 4800                    # seconds in 80 minutes
    1411200 * 4800 = 6773760000       # bits in a 80 minutes CD
    6773760000 &#x2F; 8 &#x2F; 1024 &#x2F;1024 = 807 # In MB</code></pre>