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

Read also:

• 5 Simple Walking Tricks That Burn Fat and Build Muscle, According to a Trainer - Eat This Not That
• Why do some people have sex with dogs?
• Jenny from Perth writes – my partner is the life of the party, women and men adore him. But at home, he gets angry at us for the silliest reasons and never nice words me or our kids, always putting us down. Should I stay or leave him?
• Why do I want to give up on men?
• Do all rocket engines emit harmful gases into the atmosphere during launch?
• Why do I feel sleepy after massage?
• Have you had any paranormal activity situations happen personally to you or someone you know?
• How do I confess to my crush who had a traumatic past with his previous partner without losing the friendship?
• How will Israelis respond to someone claiming that anti-Zionism is not anti-Semitism, in the same way as anti-feminism not being misogyny and opposing same-sex marriage not being homophobia?
• Why did my ex replace me so fast?
• What if you were the only and last person left on Earth. How will you survive and what would you do with your life?