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

Read also:

• Super Again: UNC Storms Past Oklahoma in NCAA Regional Finale - 247Sports
• "Oh, Mary!" star Cole Escola manifested their Tony win the old-fashioned way - Salon.com
• Defiant Tusk to call confidence vote to reassert his authority in Poland after election setback - politico.eu
• Algorithm to analyze smartphone app data can predict MS symptoms - Multiple Sclerosis News Today
• How can someone express their love for a guy without using words? What are some actions that can convey love and care?
• I have a black elbow sleeve leotard that I wear with sheer pantyhose. Should I keep my pants off and show my legs?
• Miley Cyrus Recalls How She Used to 'Hide' Drug Spending From Her Accountant - TooFab
• This is the safest place to hide when a nuclear bomb strikes - The Brighter Side of News
• Million-Dollar Project Aims to Expose Bad Medical Research - Gizmodo
• Djokovic vs Norrie: Things we learned - Roland Garros
• 10 Albums Out This Week You Should Listen to Now - Pitchfork