Types Answer 4 - GNU Emacs Calc Manual

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3.7.36 Types Tutorial Exercise 4

     2:  0@ 47' 26"              1:  0@ 2' 47.411765"
     1:  17                          .
         .

         0@ 47' 26" <RET> 17           /

The average song length is two minutes and 47.4 seconds.

     2:  0@ 2' 47.411765"     1:  0@ 3' 7.411765"    1:  0@ 53' 6.000005"
     1:  0@ 0' 20"                .                      .
         .

         20"                      +                      17 *

The album would be 53 minutes and 6 seconds long.