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

Read also:

• Which is more effective for joint pain relief: a red LED light or an infrared heat lamp? Is there a noticeable difference in the speed of pain relief between the two?
• What is your favourite true story to tell at a party?
• Nationals’ cornerstones come up big in series-opening win against Padres - The Washington Post
• Which is the correct Tamil New Year, Thai-1 or Chithirai-1?
• Credit cards could blow up a carefully crafted crypto compromise - Politico
• An Optometrist Is Begging People To Stop This Common Habit ASAP - AOL.com
• Physicists Propose Cheaper Alternative to Particle Colliders: Supermassive Black Holes - Gizmodo
• Anthropic Researchers Warn That Humans Could End Up Being "Meat Robots" Controlled by AI - futurism.com
• Has Trump fooled Canadian PM Carney by pretending to negotiate and suddenly doubling steel tariffs to 50%?
• What are some of your favorite hip hop lyrics?
• Off-the-shelf stem cell therapy for type 1 diabetes continues to show positive results - STAT
• Checkers Drop Game 1 of Finals in Double Overtime - Charlotte Checkers Hockey