Use 2 dates and get results in a 3rd date

[ptl14495]

Hi,

I want to know how many contracts i have signed in a specific date. 

For this i will use Contract's start and expiration date.

Example bellow

Start	expiration	Contract Analysis Calendar	Contracts Active
01/01/2010	31/12/2015	01/01/2018	-
01/01/2012	31/12/2016	01/01/2018	-
01/01/2015	31/12/2018	01/01/2018	1

What formula can i use in Qlik Sense?

thank you