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

Read also:

• Why do I get stressed when I go to bed?
• Was Jimmy Carter a good President of the United States?
• Federal judge approves $2.8B settlement, paving way for US colleges to pay athletes millions - ABC News
• World fertility rates in 'unprecedented decline' - UN - BBC
• Is it possible to make cars that run on water instead of gasoline or other fossil fuels? Why haven't we done so yet?
• 2025 U.S. Open odds, predictions: Top picks, props, longshots and PGA golfers to fade this week - SportsLine
• Are We Wrong About Dark Matter? Dwarf Galaxies Suggest So - SciTechDaily
• Timothée Chalamet, Kylie Jenner take in Knicks-Pacers Game 6 after making trip to Indy - New York Post
• Cathie Wood says the Musk-Trump feud reveals how much Musk's companies rely on the government - Business Insider
• What Happens to Your Blood Pressure When You Eat Dark Chocolate Every Day? - Verywell Health
• Vikings are worried about J.J. McCarthy (if you ignore everything they've said) - The Viking Age