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

Read also:

• Whole-body movement play shows promise for children with autism - PsyPost
• What's your review of the movie Poor Things?
• Most people obey arbitrary rules even when it's not in their interest to do so, experiments show - Phys.org
• Self-learning neural network cracks iconic black holes - Phys.org
• Why do you think Democrat favorability ratings are so low?
• Tender Moment Nurse Mare Adopts Orphaned Foal As Her Own Has Us in Tears - Yahoo
• Do Republicans want to ban books and decide what your kids can and can’t read?
• Why do North Indians, living in Bangalore, not bother to learn Kannada?
• What is the cost of living in Sweden as a family?
• When I buy a house, do I automatically own all items the previous owner failed to remove from the property?
• What kind of person does a narcissist hate?