Calculate how many days

hello everybody
in a view with name “inop” i have a list with of the means inoperative e the date.
how do I calculate how many days are inoperative?
thanks

Please clarify.

Excuse me.
In a filter slice the computers that are inoperative.
I would like to see how long they remain inoperative in days

If the out-of-service/inoperative time is in a Date-type column, you can compute the number of days with:

(TODAY() - [DateColumn])

If the out-of-service/inoperative time is in a DateTime-type column, you can compute the number of days with:

ROUND(HOUR(NOW() - [DateTimeColumn]) / 24.0)

ok!
but can i add this formula olso in a virtual column?

@Cannone_Cannone
Yes you can. It’s an expression at the end.