Calculating number of days from Date Reservation widget?

Is it possible to extract the number of days picked in the date reservation widget for use as a multiplier. I want to calculate days multiplied by cost. Thanks in advance.

Unfortunately, this is not possible with the Date Reservation widget. However, you can accomplish it with the Date Difference widget: https://widgets.jotform.com/widget/dates_difference 

Let us know if that works out for you.