Handling Duration on Excel

Hello Knime community : D I hope you´re doing great.

So, I have a WK which returns some columns with “Duration” values.

I need to do some math with this values on the excel file. when I save the file I got the values like this.

Saving it as a String chain I got the value

But it is a string so I can´t do math with the value.

Is there a way to export this kind of values in a correct format to an excel

file, or any idea of how can I handle this values before saving it?

-N