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

Read also:

• Is the Trump-Zelenskyy meeting a preview of what the US is going to do to Taiwan?
• Why do people immediately disregard subjects such as flat earth, without opening their minds/taking time to research?
• How do flat earthers explain the Earth being stationary? Is this concept considered impossible?
• What are some difficulties in a JEE aspirant's life?
• How do teachers justify punishing a student for fighting back against their bullies?
• Why should we share our wife with others?
• How do you go about getting invited to an orgy?
• Cleveland issues public health alert after spike in COVID-19 detected in wastewater - Cleveland.com
• Supernovas may have triggered life-threatening changes in ancient Earth's climate. Scientists say it could happen again - Space
• How did my ex move on very fast?