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

Read also:

• South Africa Is Rising Up Out of The Ocean, Scientists Reveal - ScienceAlert
• Everything Tony Vitello said about Tennessee's loss to Arkansas in opener of super regional - 247Sports
• Mauricio Pochettino on Absent Christian Pulisic: 'Players Cannot Dictate the Plan' - FOX Sports
• Being fat is a trap - Hacker News
• 7 Thoughts on Grand Slam Track Philadelphia: Melissa Jefferson-Wooden & Kenny Bednarek Rule the Sprints, Hello Nico Young, & More - LetsRun.com
• Experiment Reveals What Prolonged Fasting Actually Does to The Human Body - ScienceAlert
• South Korean stocks rise 2% to lead gains in Asia after opposition leader wins presidential election - CNBC
• Chevy Corvette Looking To Steal Mustang GTD Nurburgring Record: Report - The Drive
• Galaxy Watch could automatically lock your phone when it's left behind - SamMobile
• Doritos, Cheetos, M&Ms and other popular snacks will soon have warning labels in Texas - KHOU
• What's the point of gender reassignment surgery which doesn't change a person's chromosomes?
• What are the potential economic consequences of the U.S. following Europe's lead on climate policies, as discussed in the article?
• FDA expands approval of Moderna's RSV vaccine to some adults under age 60 - ABC News
• The USB-C dream is dead and it’s too late to revive it - Android Authority
• Simulations Show What Really Happens When a Black Hole Devours a Neutron Star - Gizmodo