On May 20th, a trader buys two hundred December put options (= 2 option contracts) with a strike price of $21. The stock price is $19.6 and the option price is $5.4. At the expiration, the stock price becomes $19.7. What is the option profit to the trader? If it is a loss, then enter a negative value.

For example, if the loss is $123.45, then enter "-123.45".