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

Read also:

• Why is Taylor Swift re-recording her albums?
• Isaacman’s bold plan for NASA: Nuclear ships, seven-crew Dragons, accelerated Artemis - Ars Technica
• I just cannot wake up early, even if I sleep on time. What should I do?
• Why do narcissist move on so easily?
• What is your best gay fantasy?
• In the last 500 years, have there been civilizations whose cruelty matched that of Nazi Germany?
• What are some examples of unofficial acts by presidents?
• Does the West have a defense against China's PL17 air-air missile?
• Why do I get bored with porn so quickly? I can watch maybe half a video (5 mins max) and then get bored and do something else. I don't watch porn often, just a teenager. 17.
• Is it sinful for Christians to look at beautiful women?
• Why do people who were very kind and loving once become cold-hearted?