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

Read also:

• What is the boldest and craziest thing your mother has ever done for you?
• Terraforming Mars: Scientists Reveal the 3-Step Plan to Breathe Life Into a Dead Planet - SciTechDaily
• Is it possible to start a small scale domestic BPO (Call Center)?
• Why was Super Buu so afraid of having Fat Buu torn out and becoming Kid Buu if he was going to destroy the Earth even before his transformation?
• DNA analysis of the "Dragon Man" fossil skull gives an identity to this early human species - Earth.com
• Experts Predicts Unrecognizable Changes to Earth’s Map - The Daily Galaxy
• 4 ways women are physically stronger than men - The Washington Post
• What are the cities in England, UK that have trams?
• BYU’s Lexy Lowry destroys national record, finishes 2nd in NCAA steeplechase - Deseret News
• Is there a noticeable difference in performance between expensive running shoes and cheaper alternatives like Asics and Nike's "free" series? Are expensive running shoes worth the cost?
• Which is better, a naked picture of some one you know or porn videos?
• China consumer prices slump again, deepening deflation worries as demand stays weak - CNBC
• Sabrina Carpenter Shares New Song “Manchild”: Listen - Pitchfork