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

Read also:

• Should I have left it alone and kept quiet? I came out as gay to my adult kids last week. Age 61 married 15 years, divorced for 20. I feel so guilty for ruining their lives by living a lie.
• Your Blood Test Can Now Track Junk Food Consumption - Indian Defence Review
• R-Truth receives outpouring of support from WWE stars after stunning release: ‘Immeasurable’ void - New York Post
• Amazon planning $10B investment in North Carolina for data center and AI campus - AP News
• Astronomers Astonished by Largest Explosion Since the Big Bang - futurism.com
• Journalism A Go For Belmont Stakes After Saratoga Work - Thoroughbred Daily News
• Physicists force atoms into state of quantum 'hyper-entanglement' using tweezers made of laser light - Live Science
• What, when building a house, are the necessary wires (beside 120v) to future proof my house, Cat6, Coax, low voltage, and alarm wires?
• Call of Duty: Black Ops 6 now shows you microtransaction ads when you swap weapons - Eurogamer
• Mario Kart World Guide - All Courses, Cups, Missions, Collectibles, Tips & Tricks - Nintendo Life