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

Read also:

• Why are North Carolina Democrats against Mark Robinson? He is the modern Martin Luther King Jr. and the Democrats are being stupid for not voting him.
• Can people who have never met you tell if you are a covert narcissist?
• Has a psychic ever made a crazy prediction that turned out to be true?
• Why are US customs agents so talkative? I cringed hard when a US customs agent asked me if I was on vacation. He doesn’t need to know why I went to another country as long as I am a U.S. citizen.
• Is it possible to make cars that run on water instead of gasoline or other fossil fuels? Why haven't we done so yet?
• Do you think this Labour Party is qualified to run our country?
• Is there a specific time frame for therapists to tell their clients they are wrong?
• How does gut health affect mental well-being?
• Why do women have sex with dogs?
• How should I go about convincing my mother that my foreign online boyfriend isn't out to get my holes or scam me?
• While wearing high heels and walking heel to toe, when the toe box hit the floor there is a noise. How do I keep the noise just for the heel?