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

Read also:

• Is it common for Americans to feel "trapped" due to the size and distance of their country from other countries/continents? Is this feeling an exaggeration or a reality?
• NASA’s Webb Telescope Captures a Stunning New View of the Sombrero Galaxy - The Daily Galaxy
• Posting Memes With Pride - Vulture
• What is the worst name in Tolkien’s legendarium (meaning and look)?
• Why do men love swallowing more then women? Is it just because women just don't try eating CUM? they be missing some delicious CUM.. Life is short and women are missing out of lots of enjoyment..
• Most-complete Stegosaur skull ever found forces rewrite of dinosaur history - Earth.com
• Do guys prefer big boobs or small boobs? Why?
• Mario Kart World Is Not An Open-World Game, Nintendo Says - GameSpot
• Navigating some of the thorny questions of estate planning - NPR
• This nonhormonal hot-flash remedy gives options to women, experts say - The Washington Post
• Doctors Have Been Saying Sugar Is Bad – But They Missed This - SciTechDaily