Profit Calculation in Crude Oil Futures

A trader anticipates that the price of crude oil will increase in the next six months. To capitalize on this expectation, the trader decides to enter into a futures contract. The futures price for crude oil is currently quoted at $70 per barrel, with a contract size of 1,000 barrels. At the expiration of the futures contract, if the price of crude oil has indeed risen to $80 per barrel, what will be the trader's profit from the futures contract?