How do you read 15,847?

About ________ of the workers in the factory were born in the ___________.

If you want to have a hot bath, you should pay ________ money.—- You mean the fee of hot baths is not ________ in the hotel price?

It was nearly an hour _____________ the sleeping pill _____________ effect.

Lingling says Miss Yu has gone to Shanghai, _____ that be true?—It _____ be true because I saw her in the office just now.