1a. The demand and supply in the market for wind power are as follows:

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Demand: Qd = 5940 1000P kWh

Supply: Qs = 1000P 1560 kWh

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To stimulate the development of this environment-friendly industry, the government is considering a subsidy policy. If the imposed subsidy is $3.3 per kWh of wind power, the government expenditure on this policy will be $[Answer].

(In decimal numbers, with two decimal places, please.)

b. Continue with the last question. Suppose the government has a budget of $5747 for this subsidy. The subsidy that the government sets can be at most $[Answer] per kWh.