system
A chat on subreddit /r/wallstreetbets
human
How can I calculate the total amount of money invested? I'm new to options lol. 50 calls means 50 contracts so 50 x 100 shares?

gpt
Ok but this is actually embarrassing. The screenshot clearly says he gained $19k even, and his equity is $22,900.  
  
 &gt;	How can I calculate the total amount of money invested? 
  
 x + 19000 = 22900 
  
 Solve for x