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

Read also:

• Physicists create 'the world's smallest violin' using nanotechnology - Phys.org
• Astronomers thought the Milky Way was doomed to crash into Andromeda. Now they’re not so sure - The Conversation
• Have husbands and wives ever had a threesome with someone in real life? How did it happen?
• Steven Spielberg will introduce a ‘Jaws’ 50th anniversary special - CNN
• Do people really have sex with animals?
• What should you do if a police officer comes to your house and asks for someone who doesn't live there anymore?
• Seattle Mariners Injury Updates: Logan Gilbert, Bryce Miller, Luke Raley, More - Lookout Landing
• UFC Atlanta results: Rose Namajunas fends off submission scare, overwhelms Miranda Maverick - Yahoo Sports
• Seahawks coach sounds off on ‘crazy’ Sam Darnold QB controversy after $100 million star’s rough practice - New York Post
• Do handsome guys intimidate women or people in general?