Unable to install mongodb on ubuntu 16.04

Team,

I am trying to install mongodb on ubuntu 16.04 as per steps given in this link :

https://www.digitalocean.com/community/tutorials/how-to-install-mongodb-on-ubuntu-16-04 When I run this command it gives following message :

But its failing on the step 2 - “Installing and Verifying MongoDB”.

Some packages could not be installed bla bla bla. …

The following packages have unmet dependencies.

mongodb-org : Depends : mongodb-org-tools but it is not going to be installed.

E: Unable to correct problems, you have help broken packages.

Can some one help me get through this. I have a screen shot of console. Let me know if you want me to send via email.