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

Read also:

• Controversial Call Leads To Oregon Losing By A Run - University of Oregon Athletics
• Nephrologist shares signs to know if your kidneys are not healthy: 'Weight loss and poor appetite to swelling in…' - Hindustan Times
• Which is better, a naked picture of some one you know or porn videos?
• Is Russia now too weak to save the Assad dictatorship in Syria again?
• Brian Wilson’s Friend Remembers First Night “Pop Genius Turned Up At The Door For A Pizza” - Deadline
• What is Alan Kay’s view on analytic idealism by Bernardo Kastrup?
• Neanderthals Spread Across Asia With Surprising Speed—and Now We Know How - Gizmodo
• The Incredible Story of the 20-Foot Sloths and What Caused Their Extinction - Indian Defence Review
• Elliotte Friedman floats Capitals as potential free-agency suitor for Brad Marchand after veteran winger stars in Stanley Cup run with Panthers - RMNB
• Is there a future where LA's wildfire seasons no longer exist?
• Are romance novels of today still allowed to be bodice rippers, or do publishers not allow this sort of romance genre to exist anymore?
• Rocket Report: Northrop backs Firefly and names its rocket; Xodiac will fly no more - Ars Technica
• Why do wives cheat on their loyal husbands?
• Crunch time—we’ll soon find out if Amazon’s launch providers are up to the job - Ars Technica
• GM plans $4 billion push to move production from Mexico to U.S. - The Detroit News