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

Read also:

• Do women lack the mental strength to succeed at STEM? There seems to be few women at STEM and more women leave STEM after a time of working at it. How can it be just sexism if women aren't banned from entering?
• Why do you think most harem anime and manga have lame male protagonists that would be considered losers and pathetic by most people?
• This hidden Android feature was a lifesaver when my home internet died — here's how it works - Tom's Guide
• While on the surface of the moon, why isn’t the Apollo 11 spacesuit inflated like a balloon from the 3.7 psi internal pressure?
• Why did Amazon initially deny leave of absence to Alexis Scott-Windham, the Amazon worker who survived the New Orleans terrorist attack?
• Analysts revamp forecast for Nvidia-backed AI stock - TheStreet
• I’ve a dismissive avoidant partner who said that he’s overwhelmed by our relationship and that he wants to break up, how do I get him back?
• Why do some people refuse to explain their actions or behavior when asked? Why do they claim to not know the reason instead of providing an explanation?
• How can you know if they are your twin flame and not limerence or obsession?
• Do you think cheating is that bad?