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

Read also:

• Tony Hawk's Pro Skater 3 + 4 gets pre-order exclusive demo and a Ninja Turtle - Eurogamer
• Nintendo Appears To Have Updated Donkey Kong Bananza's Switch 2 File Size - Nintendo Life
• Who are the most controversial members of BTS besides Jimin?
• Is there a possibility that BTS members will be exposed by "Dispatch" for publicly dating, similar to other K-pop stars who have recently been seen doing so?
• Want to lower your cholesterol? Try a daily cup of this common bean - The Independent
• With ‘Ballerina’ Falling Short at the Box Office, ‘John Wick’ May Finally Be Getting Stretched Too Thin - IndieWire
• Why can't hot girls date ugly guys? I am ugly but I want an attractive girlfriend
• Tea, berries, dark chocolate and apples could lead to a longer life span, flavonoid study finds - Medical Xpress
• Mars Orbiter Captures Rare View of Ancient Volcano Poking Above the Clouds - Gizmodo
• Isaacman interested in privately funded science missions - SpaceNews