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

Read also:

• Is OnlyFans good or bad for the society? Why?
• Humans have evolved and become hairless and odor free. How do other races learn about evolution since evolution does not apply to them?
• How can I get my ex-husband to love me again?
• Who's your celebrity crush?
• My waist finally looks like how it did before I had kids but I didn’t lose weight. Why am I still 15 lbs from my starting weight?
• Do very hot men ever feel attracted to an ugly woman? Why?
• What do feminists mean when they say they want to ‘normalize’ menstruation and its discussion?
• New COVID variant swiftly gains ground in US; concern looms for summer wave - Ars Technica
• Why do people immediately disregard subjects such as flat earth, without opening their minds/taking time to research?
• Why do humans sweat while stressed?