Hello! I need help with this question please. thank you very much

Compute the DWL in the power generation industry. Enter only the number, without symbols or words.

Electric power generation in the town of Cochabamba is done by diesel-powered plants. The industry is perfectly competitive. The government estimates that the marginal costs of power generation are constant at 1995 cents per megawatt. Demand for electricity is estimated to be given by Q = 1600 - 0.2 P. where Q is measured in megawatts per hour, and the price is measured in cents per megawatt. Diesel-powered generating plants emit greenhouse gasses and other pollutants; the external cost imposed on society is also constant and estimated at 400 cents per megawatt