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

Read also:

• What qualities do single women typically look for in a man? Is it a common preference for women to want a man who earns more than they do?
• Long-lived people have the same crucial blood biomarkers, pointing scientists towards new anti-aging treatments - Earth.com
• Which fish tastes good for South Indian curries?
• Trans athlete embraced as California track and field champion by peers while adult activists duel - San Francisco Chronicle
• Moderate liberals, if any use leftist Quora, how do you feel about being associated with those who enjoy burning American flags, supporting Hamas, having men competing against women in sports, open borders, green new deal and general wokery?
• Satellite Images Suggest US Avoided Iran’s Nuclear Reactors - Bloomberg.com
• Saepe ut vero explicabo illo hic aspernatur.
• A Forgotten Cancer Is Surging in Young People, And Experts Are Puzzled - ScienceAlert
• A Single Stellar Flare Could Change a Planet’s Atmosphere in Just Days—Including Earth - The Daily Galaxy
• What’s a sleep paralysis demon? And other facts of the bizarre phenomenon - CNN
• S.A.-area rabies cases spark concern for officials. Here's why - MySA
• Calvin Pickard Saved The Day - Defector