What is the sum of X+XX+XXX+XXXX?

Read also:

• How do I cope with the fact that I will never have a girlfriend?
• How do you know how physically attractive you actually are?
• New model helps to figure out which distant planets may host life - Space
• I found a simple toggle to get rid of ads in my Gmail inbox, and I can't recommend it enough - Android Authority
• What was your most memorable experience catching a fraudulent car seller?
• Have you ever had sex with your husband's friend in front of your husband? Please tell about it and elaborate.
• Do women lack the mental strength to succeed at STEM? There seems to be few women at STEM and more women leave STEM after a time of working at it. How can it be just sexism if women aren't banned from entering?
• — fri(end)s forever!
• Exploring the cosmos fills us with wonder, Pope tells scientists - Vatican News
• Why do Trump supporters believe Trump should deport the immigrants? These people you call "illegal immigrants" have lived here for many years, they have houses, jobs, how can you think they will just go back to their country, where they have nothing?