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

Read also:

• Warming climate may flip the script on the amount of CO₂ released by trees, study finds - Phys.org
• If you received hand-me-downs as a child, how did they make you feel?
• Checkers Drop Game 1 of Finals in Double Overtime - Charlotte Checkers Hockey
• Do guys ever want to suck a dick even though they are straight?
• Rangers stand pat in quiet first night at NHL draft as K’Andre Miller uncertainty lingers - New York Post
• How was cancer treatment different in the US and the UK?
• "Maintaining Strong Bones Has Less To Do With Drinking Tons Of Milk": Experts Are Sharing What To Foods May Negatively Impact Your Bone Density - BuzzFeed
• Scientists Predict a Million-Fold Drop in Oxygen — Here’s What it Means for Earth’s Future - The Daily Galaxy
• A Mistake Led to the Discovery of an Underwater Island Full of Rare Earth Elements - The Daily Galaxy
• With the 34 indictments being proved to be fake by admission on CNN, what do Democrats have now? You can’t keep yelling he’s a felon. What other lies do you have?
• A hidden swarm of 'city-killer' asteroids around Venus could one day collide with Earth, simulations suggest. - Farmingdale Observer