Alright, lets get started.
Julianne purchased stock for $9,433.
Means the base cost is = $ 9433
Yesterday, she sold the stock for $10,219.
Means gross sale price = $ 10219
Gross caiptal gain =

Gross capital gain =

Gross capital gain = $ 786
Hence her capital gain was $ 786. : Answer
Hope it will help :)