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

Read also:

• Why is the concept of pumping water uphill not commonly used as a source of electricity generation, similar to pumped-hydro systems?
• Concerns About the US Economy Continue to Grow While Its Forecasts Shrink - splinter.com
• Do crossdressers like wearing pantyliners and tampons in their butts?
• Why do men love to stink/being smelly?
• President Trump kicked Zelensky out of the White House. Is it over for a deal?
• Has a cop ever said something to you which was completely unexpected?
• How do you recognize when your mental health might need attention?
• What are the strangest parts of The Bible?
• What movies and TV shows portray realistic beauty standards?
• How old is planet Earth? Is it 4.5 billion years old or 6,000 years old?
• Do you consider yourself pretty?
• How do professional musicians handle their equipment during gigs? Do they bring their own or use the venue's sound system?