Elon Musk purchased Twitter earlier this year for $44 billion. Afterwards, he found out that 95% of Twitter users are bots. Twitter can now spend $5 billion to verify every human user and permanently eliminate these bots. This investment would increase Twitter's present value of future cash flows from $20 billion to $30 billion. What is the Net Present Value (NPV) of this user verification project? (Enter your answer in billions of dollars so if you think the answer is $523 billion, enter 523 ) Numeric Response