On Nov 27 2019, the stock of Tesla Inc (NASDAQ: TSLA) was traded at around $330 a share. You speculated that the stock price of TSLA would soar in the near future after reading several positive news about the company, and you purchased 10 contracts of call options with a strike price of $630 and expiration date on June 19 2020, at a price $185 per contract. Option contracts are 100 shares per contract. In other words, you spent $1,850 on these options and then owned the right to buy 1000 shares of TSLA stocks on June 19, 2020 at a cost of $630 per share. 2. On June 19 2020, a share of TSLA stock was traded right around $1000 before the market closed.

Imagine you sold all 10 contracts at that moment, what would be the the total gains and rate of return from holding these call options?