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

Read also:

• Have you ever lied to your family? What were the circumstances?
• Having read so much about Archie and Lilibet not actually existing, does anyone have any proof that they not only exist but that Meghan gave birth to them?
• How do you say "I don't speak French yet, but I hope to speak it well one day. It would be a pleasure to learn French with you. Would you like to teach me French?" in French? Could you add audio?
• What is it like to be a Christian in Iran?
• Scientists Unveil a Method to Give Every Human the Ability to See in the Dark - The Daily Galaxy
• Are Indian youths conservative or liberal?
• What is the central theme of the entire Bible in one word (if possible)?
• Study debunks 100-year-old understanding of what brain cells look like, forcing rewrite of biology textbooks - Earth.com
• Why don’t the little sugar breeches gun owners understand that life isn’t all sunshine and rainbows?
• Why do people keep denying the similarities between Latin and Italian by saying they are totally different languages when it’s obvious they sound similar?
• Can you share a lesson that you learned later in life and how it has impacted your current lifestyle, mentality, or attitude?