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

Read also:

• What does it mean when a guy says he doesn't want to ruin the friendship? Is he rejecting me or is there another explanation? Why would a guy choose not to risk the friendship if he has feelings for me?
• How do I stop someone from forcing/pestering me to become gay/bisexual when I already want to be straight?
• Why do I feel bad when I see white girls dating black guys, am I racist?
• Will my parents go to hell if I don't wear hijab, they tried to convince me and they provided it to me but I don't want to wear it?
• Why is Reagan seen as the best president in the USA when he literally destroyed the American economy with trickle down system and was strongly against worker unions?
• The #1 Underrated Vegetable with More Vitamin C Than an Orange, According to Dietitians - EatingWell
• What does it mean to you to live a life that reflects biblical values?
• How do I study with focus and concentration and avoid distractions and procrastination?
• Why did Kakashi use Chidori against Rin, despite knowing about her feelings for Obito?
• How did your marriage end?
• Can you share any "backstage pass" experiences you have had at concerts?