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

Read also:

• Analyst Suggests Apple Might be Considering Buying Unity After Legal Defeat to Epic Games - 80 Level
• What are some cool confidence hacks?
• RKF Jr. May Have Just Ruined Our Best Weapon Against Bird Flu - The Bulwark
• What is the reason behind some people wearing trunks instead of speedos when swimming in pools?
• Why do atheists love to preach against Abrahamic religions and mock God? Even if they do not fear the eternal fire of hell, pious Muslims will certainly not leave them alone and will take brutal revenge until they surrender and repent of their sins.
• Autism and ADHD have distinct brain connectivity signatures, study finds - Medical Xpress
• Why did Mark Lane harass Helen Markham during an illegally recorded telephone conversation to misidentify Lee Harvey Oswald who she witnessed as the shooter of Tippit?
• After fifty years of trying, science has created the toughest diamond on Earth in a laboratory - Earth.com
• What does it mean when a guy says he doesn't want to ruin the friendship? Is he rejecting me or is there another explanation? Why would a guy choose not to risk the friendship if he has feelings for me?
• Love Island Cast Member Leaves the Villa on Day Two - Vulture
• Physicists Unveil New Quantum Super Material That Could Revolutionize Electronics - SciTechDaily
• 2000 times the volume of Earth! These scientists made a discovery, this planet in our solar system was twice as large 4.5 billion years ago. - Farmingdale Observer
• Devin Harjes, "Boardwalk Empire" and "Manifest" actor, dies at 41 - CBS News
• Which album is your favorite that's now 50 years old (from 1975), and what's the best song on the album?
• Why do you think Democrat favorability ratings are so low?