as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
calculate the profit earned from a sale of 10 items at $4 each with a cost of $0.50 for each item.
user
the profit from the sale is $35.00.
assistant