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

Read also:

• Westinghouse pursuing US nuclear expansion with 10 large reactors after Trump orders: report - New York Post
• How PTSD Disrupts Brain Cell Communication - Neuroscience News
• What is your favourite photo with your mother?
• NYC’s Noisy Skies Get Electric With Beta’s Demo Flight Into JFK - Bloomberg.com
• Omada Health Shares Soar After IPO as GLP-1 Drugs Fuel Interest - WSJ
• Researchers are starting to untangle the links between cognitive processes, emotion regulation, and depression - PsyPost
• What is your favourite true story to tell at a party?
• What does it feel like to "lose your looks" to age?
• Michael Altenhofen Is NASA Deputy Chief of Staff - NASA Watch
• Sloths The Size of Elephants Roamed America, Before Abruptly Vanishing - ScienceAlert
• My ex moved on so fast. How can I overcome the pain?
• What do you think about a sister's love?