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

Read also:

• Was Jesus Christ Jewish?
• Where can Ukrainians go if they cannot have shelter and heating this winter?
• Baby Talk Enhances Infant Speech Learning - Neuroscience News
• Why do people always talk about Ohio as it's a dangerous city?
• Are women as visual as men are?
• Why is the word "democracy" not in the preamble of the US Constitution?
• Fewer than 500 neurons are associated with the suppression of binge drinking, new research finds - Medical Xpress
• What were Hitler’s habits?
• Why do many men like women's breasts?
• Is anal sex allowed in Islam? It's not written anywhere in the Quran whether it's forbidden or not.
• Why is there so much hate against black people?
• Why do men think I’m easy just by looking at me?
• Why do guys have better skin than women even though women use more product?
• How do I stop having work crushes because I only keep getting disappointed almost every day as I keep seeing they don’t like me back and won’t ever ask me out?