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

Read also:

• Do Republicans give permission to Democrats to vote for any candidate except for Kamala Harris?
• Meet the Kardashians' plastic surgeons responsible for Kris Jenner's new face and Kylie's 'teardrop' curves - Business Insider
• What are some life hacks for living on your own?
• The S&P 500 closes at 6,000 as bulls aim for return to record territory - MarketWatch
• What makes you different?
• After 6 new cases over the weekend, North Dakota has nation's highest measles rate - InForum
• What do teens do at night?
• Microsoft belatedly attempts to tame USB-C confusion with its rules for PC OEMs - Ars Technica
• Father’s Day 2025: 28 gifts dads will actually want - The Verge
• What are some reasons why some men choose to live alone instead of getting married?
• Why does my cat get anxious during loud noises like thunderstorms or firework displays? Is this a common behavior for cats, and is there a way to help them cope with it?