Assume that the long-run aggregate supply curve is vertical atY = 20,000, while the short-run aggregate supply curve is horizontal at P= 1.0. The aggregate demand curve isY = 10 M/P, andM= 2,000.

Suppose because banks increase the fees to withdraw money at ATMs, the aggregate demand function shifts toY= 2 M / P.

What is the long-run value of the price level P? Please double check answer and explain