\
\
Time for each song
\ \
\
Time for nine songs
\ \
\
\
The numerical expression is
.
\
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0e07db80c8ea4e870f76a758a9fca361.png\")
\ \
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=df124193fdd5dce5a649e31999c86ef2.png\")
\ \
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3e1326d42de87f73f5bcb0cd13a836b5.png\")
.