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

Read also:

• What do you think of the controls that will be set up over information flows at Taiwan's Ministry of Foreign Affairs' missions?
• Rare Red Sprite Photographed in Tibet Dazzles Social Media - PetaPixel
• Will Kamala Harris rekindle the business model of sleeping your way to the top?
• What do men find attractive in an older woman?
• Shortcuts App to Get Revamp With Apple Intelligence Integration - MacRumors
• What are some innovative business ideas for leveraging AI in 2024?
• If a female has XX chromosomes and a male has XY chromosomes, what chromosomes do transgenders have?
• BlackRock removed from Texas blacklist after climate policy rollback - Financial Times
• What is the kinkiest thing you and your sex partner have done in bed?
• Trump puts U.S. Steel cart before the horse - Axios