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

Read also:

• We've Finally Seen The Skyscraper Tsunami That Shook Earth For 9 Days - ScienceAlert
• I tested Apple’s 11th-gen iPad for a week, and it’s still the best tablet - CNN
• Has anyone ever had sex with their cousin? How did it start, and would you do it again?
• Do *Not* Click This Post If You’re Squeamish: 17 Personal Care Products With Gnarly Before And After Photos - BuzzFeed
• Heavily shorted AI stock is rapidly climbing the Fortune 500 - TheStreet
• Why am I dreaming of people I've never seen before?
• Binge Eating Disorder: Plea for specialist services in Northern Ireland - BBC
• How will the article end in Part III of Gleissner's hit piece?
• How to use Google's AI-powered NotebookLM — 5 tips to get started - Tom's Guide
• Archaeologists find what may be the first definitive proof that Neanderthals made artwork - Earth.com
• Do you have any problem dating a younger man?
• Do most narcissists have good intentions as long as you are under their control?