The firm's accounting profit is $50,000.
To calculate the firm's accounting profit, we need to subtract the total costs from the total revenues. In this case, the total revenues are $1 million and the total costs are $600,000 for labor, $150,000 for capital, and $200,000 for materials. Thus, the accounting profit can be calculated as follows:
Accounting Profit = Total Revenues - Total Costs
Accounting Profit = $1,000,000 - ($600,000 + $150,000 + $200,000)
Accounting Profit = $1,000,000 - $950,000
Accounting Profit = $50,000