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

Read also:

• Ravens in "introductory stage" of Lamar Jackson extension talks - NBC Sports
• Why do flat-earthers claim the 1967 photo of Earth from space was made with CGI, even though CGI didn't exist back then?
• We finally may be able to rid the world of mosquitoes. But should we? - The Washington Post
• What are your thoughts on the dating app "scam"?
• It is day 42 of the Trump administration. Is the war in Ukraine over? Is inflation solved? Are groceries cheaper?
• Nintendo Switch 2 and Mario Kart World available today - My Nintendo News
• Why do people who were very kind and loving once become cold-hearted?
• Common Diabetes Drug Linked to 'Exceptional Longevity' in Women - ScienceAlert
• Column | Nervous about using the bathroom at work? A gastroenterologist shares advice. - The Washington Post
• Mountaineers Defeat Kentucky to Advance to Super Regionals - West Virginia University Athletics
• How to reduce your risk of melanoma and other skin cancers - KSLTV.com