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

Read also:

• Health officials warn of measles case from traveler at Dulles Airport - The Washington Post
• Bats don't get cancer, now scientists think they know the reason - Earth.com
• Chinese Biotech Showcases Challenger to Eli Lilly’s Obesity Drug - Bloomberg.com
• Re-ranking the 16 super regional teams in the 2025 NCAA baseball tournament - NCAA.com
• Why do I keep dreaming of my mom, who recently passed away from cancer, still being sick and in pain?
• Why is dating so frustrating and difficult for a guy?
• Forget drones, Amazon has new robots that could replace humans - TheStreet
• Low-cost green hydrogen production possible with Korean scientists’ new breakthrough - Interesting Engineering
• Founder of 23andMe buys back company out of bankruptcy auction - Ars Technica
• Relativistic jet detected in active galaxy Markarian 110 - Phys.org
• Summer Game Fest Viewership Jumps 89% to Record 50 Million Livestreams - Variety
• Giant Inland Boulder a Remnant of Ancient Tsunami - Newser
• Researchers Use Trapped-Ion Quantum Computer to Tackle Tricky Protein Folding Problems - The Quantum Insider
• What do teens do at night?
• Do you think Trump is gambling with the lives of millions of people by getting involved in Russia-Ukraine relations?