How to calculate the total rate with amount of days selected.

This was already described in the forum: https://www.jotform.com/answers/508988-Calculate-total-rate-with-amount-of-days-selected

But unfortunately the most important screenshots / pictures are no longer displayed. Could you please reload them so that I could follow the steps in your description? Thank you in advance.

The images have been re-uploaded on the thread. 

Just to let you know, you can clone any form link example provided in the thread, here is how to do it: http://www.jotform.com/help/42-How-to-Clone-an-Existing-Form-from-a-URL 

Let us know if you need more help.