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

Read also:

• World No. 1 Jannik Sinner ousts Novak Djokovic from Roland Garros to set up title clash with defending champ Carlos Alcaraz - CNN
• A Japanese lander crashed on the Moon after losing track of its location - Ars Technica
• Musk-Trump rupture poses a serious threat to NASA and Pentagon programs - The Washington Post
• Nintendo Switch 2 launch games: Every Switch 2 game available on day one - Video Games Chronicle
• mRNA, once lauded as a scientific marvel, is now a government target - statnews.com
• What is your favourite true story to tell at a party?
• Best Pokémon to Vote for in August 2025 Community Day (PvP Analysis) - Pokémon GO Hub
• New ‘Dungeons & Dragons’ Single-Player Video Game in the Works - Variety
• What is your review of House of the Dragon, season 2, episode 8, "The Queen Who Ever Was"?
• Simone Biles calls Riley Gaines 'sick' over criticism of transgender athletes - NBC News