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

Read also:

• Should I have left it alone and kept quiet? I came out as gay to my adult kids last week. Age 61 married 15 years, divorced for 20. I feel so guilty for ruining their lives by living a lie.
• Was there a British ‘genocide’ of Aboriginal Australians?
• Why was the rock band Kiss so successful?
• What should every American know before traveling to the UK?
• What is the best interracial stories that you hear or know and want to share?
• Why do women wear less clothes compared to men?
• What is the reason behind some people referring to themselves as "nice guys" instead of simply being nice?
• Is there an MBTI personality that is more or less likely to handle stress?
• Why would a spouse cheat if the marriage is good?
• Should Pete Rose's record as the all-time hits leader be recognized and celebrated?
• Why do narcissists want to hurt your feelings, even after they discard you?
• Was there any slavery of white people that actually compares to the transatlantic slave trade? I’m not baiting or anything actually genuinely curious and want to know.
• Why is Canada letting too many Indians in Canada?
• Why are Boomers so vehemently opposed to student loan forgiveness?
• Why do so many guys love anime girls?