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

Read also:

• Has anyone shared his wife with a friend? How was it?
• The mystery rise of lung cancer in non-smokers - BBC
• Were Dalits prohibited from drinking water from wells in ancient times? Is there any evidence to support this claim?
• NASA is already great. Right now. - NASA Watch
• ‘We Were Right’: Leaked Medical Report Says Boxer Who Beat Up Women At Olympics Is A Man - The Daily Wire
• What type of crossdresser are you?
• Your gut doesn’t need probiotic supplements, here’s what nutritionist recommends instead - financialexpress.com
• What is your opinion? I am 150-152 and I feel short. I’m 15 years old. I feel like this makes me look like a baby and ugly on most clothes.
• Why some allergy experts want this popular group of drugs to go away - Deseret News
• Knicks fire coach Tom Thibodeau after first Eastern Conference finals berth in 25 years - AP News
• What steps can be taken to track down a scammer and determine their location?
• Invisible radiation leaking from private satellite 'megaconstellations' could ruin radio astronomy forever, experts warn - Live Science
• Seahawks defenders want to "put the team on our back" - NBC Sports