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

Read also:

• Review: FBC: Firebreak (PS5) - PS Plus Shooter Proves Remedy Should Have Stayed in Its Lane - Push Square
• What was the worst decision you ever did?
• Feather-legged lace weaver spider kills prey by covering it with toxic silk - Phys.org
• Why does it matter so much to atheists that God doesn't exist?
• Brain Criticality May Hold Key to Learning, Memory, and Alzheimer’s - Neuroscience News
• Jason Sudeikis Pays Tribute To His Late Uncle George Wendt: “I Love Him Dearly” - Deadline
• Scientists Achieve the "Impossible," Unlocking Room-Temperature Quantum Circuits Using Magnetic Graphene - The Debrief
• Immunotherapy Drugs Show Major Progress in Early-Stage Cancer - Bloomberg.com
• Howard Schultz says he 'did a cartwheel' when Starbucks CEO Niccol coined 'back to Starbucks' strategy - CNBC
• Psilocybin induces large-scale brain network reorganization, offering insights into the psychedelic state - PsyPost
• The World's Largest Organism Is Slowly Being Eaten - ScienceAlert
• What to Watch: Scenic setting for Truck Series tilt at Lime Rock Park - NASCAR.com
• Does coffee boost longevity? New study may have findings for people in midlife - San Francisco Chronicle
• Blocking Brain Inflammation Molecule May Halt Alzheimer’s - Neuroscience News