Get multi clip duration usage in timeline

Is there a way to get the exact duration of one audio that I reused more times on the timeline?
For example:
I'm editing a TV show of 30 minutes duration with various song tracks, and on the timeline I used one of them three times in different places and moments. Now, someone asks me to know the sum of the duration that I used that audio song.
Maybe there is an easy way to make this without calculating manually every clip segment, but I didn't find it.
The perfect thing would be if there were an option that shows the exact total duration usage in timeline, even if used more times.
Thanks to every one.
For example:
I'm editing a TV show of 30 minutes duration with various song tracks, and on the timeline I used one of them three times in different places and moments. Now, someone asks me to know the sum of the duration that I used that audio song.
Maybe there is an easy way to make this without calculating manually every clip segment, but I didn't find it.
The perfect thing would be if there were an option that shows the exact total duration usage in timeline, even if used more times.
Thanks to every one.