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

Read also:

• Weight stigma isn’t just cruel — it makes losing weight harder - CNN
• Can AI kill MBA jobs even if MBA is done from Ivy league universities? What should one pursue AI/ML from IIT or MBA from IIM in terms of better opportunities/wealth and career growth/duration?
• Nemo harum distinctio cupiditate soluta nesciunt beatae harum.
• Trump says Xi agreed to restart flow of crucial minerals, but analysts say China won’t give up its ‘rare earth card’ - CNN
• Over-the-counter supplement could prevent heart disease in type 2 diabetes patients - Medical Xpress
• Could supermassive black holes anchor the tiniest galaxies? - Big Think
• ‘Knives Out 3’ Teaser: Daniel Craig’s ‘Wake Up Dead Man’ Sets December Release Date, Debuts Sinister First Footage - Variety
• 'Optical neural engine' can solve partial differential equations - Tech Xplore
• CVS is shutting down 271 stores in 18 states. Is your pharmacy affected? - NJ.com
• Scientists Warn of “Irreversible Rain Chaos” Climate Shift Could Permanently Disrupt Water for 2 Billion People - The Daily Galaxy
• 7 things that overthinkers secretly enjoy that others find exhausting, according to psychology - VegOut
• ‘Gas station heroin’ is technically illegal and widely available. Here are the facts - WANE 15
• There's A Cancer Screening People In Their 30s Should Do That Can Dramatically Lower Your Risk Of Dying - HuffPost
• What is the reason behind the Russian government's negative view on foreign travel?