system
A chat on subreddit /r/wallstreetbets
human
when he bought 
  
 each contract was worth $00.01 per share. Every contract is for 100 shares. he bought 70 contracts. 
  
 &amp;#x200B; 
  
 when he sold 
  
 each contract was worth $19.00 per share. Every contract is for 100 shares. he sold 70 contracts.

gpt
looking at this how do we know be bought 70?