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

Read also:

• Have you ever followed through being bi-curious?
• What is the logic behind the porn being legal but not prostitution? Isn't it the same thing in essence?
• Yankees To Reinstate Giancarlo Stanton - MLB Trade Rumors
• Steve Jobs was brilliant but don’t copy this 'one habit' of him; warns Pixar's Pete Docter - Times of India
• What does it mean if I had a dream about my mom who passed 12 years ago waking up from her coma and asking for my dad? I have never had a dreams about her since she has been gone.
• Do humans know everything they need to know?
• — we are metamorphosing!
• What is the best technique for inserting a tampon into one’s anus?
• Why does my crush make me jealous about having a girlfriend?
• Have you ever witnessed political correctness harm someone?