The stock price of Tesla is $668. Your broker charges a rate of 0.4% on borrowed shares.

1. You think the stock price will go down soon, and want to short 73 shares. If the initial margin is 50%, what is the minimum additional dollar amount that you have to deposit from your own funds to your brokerage account?

2. Three months later, the stock price is $695. Tesla paid a dividend of $6 per share during the three months you were short. What is your percentage margin (entered as a decimal number) at the end of three months?