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

Read also:

• Elden Ring Nightreign devs confirm they’re working on a duos mode - Polygon
• Can the effects of hormone replacement therapy (HRT) be reversed?
• Alan Turing's iconic paper on a 'universal computing machine' goes up for auction - Live Science
• This Week In Space podcast: Episode 165 — Guardians of Space - Space
• Gucci Owner Picks Auto Executive for One of Global Luxury’s Top Jobs - WSJ
• Why are perceived or real slights interpreted as rejections and reality by pwBPD?
• Is it possible for doctors to diagnose prostate cancer just by looking at a patient?
• Dormant Stem Cells May Hold Key to Restoring Sense of Smell - Neuroscience News
• NY retail worker safety law takes effect this week. Here’s what it does. - Gothamist
• Is it possible to use AI to help with interview questions?
• Why did my ex of 2 years move on so fast after he left me? Why does he act so cold towards me, and as if I don't exist?