Compute the commission and gross cost for the following purchases for principals.​
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Gross Cost

Gross Cost refers to the total expense incurred before any deductions, such as discounts or rebates, providing a raw figure of the financial outlay for a purchase or project.

Commission

A fee paid for provided services, typically a percentage of the transaction value, often used in sales, brokerage, and real estate transactions.

Principals

Refers to the original sum of money borrowed in a loan, or put into an investment.