The demand and supply for packages of 10 D size batteries (the ones used in large flashlights and lanterns) are given by the following equations: Q = 23,000 - 500P and Q = 1000P - 1000, where P is price measured in dollars and Q is the number of packages of batteries produced and sold each day. Using this information, solve for the following:

(Note: if your answers are in terms of dollars, use this format: $3.50, include dollar sign and 2 decimal places. For answers in terms of quantity, use this format: 12,000, include a comma for quantities in the thousands and no decimal places.)

1. Calculate the equilibrium price.

2. Calculate the equilibrium quantity.

3. Calculate the consumer surplus at the equilibrium conditions.

4. Calculate the producer surplus at the equilibrium conditions.