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

Read also:

• Why are American women so ugly nowadays?
• Why does my girlfriend keep asking me if I love her?
• I gave him everything. He said he loved me. Why?
• What happens when you need emergency surgery in countries with universal healthcare vs the US?
• Does meth make women super horny like it does men?
• All international travelers should get measles vaccine, CDC says - OregonLive.com
• Alan Alda, Mike Farrell Among Those Paying Tribute to Loretta Swit: “A Supremely Talented Actor” - The Hollywood Reporter
• NASA Is Planning to Build a Massive Telescope on the Moon’s Dark Side - The Daily Galaxy
• How were cows used in ancient India?
• Why didn't people like the Game of Thrones ending?
• Why can't my adopted sister accept she is not part of my family because she isn't related? Why can't she stop calling my parents mum and dad?