A merchant wants to stock Christmas trees. She can place only one order per season. The merchant pays $30 for each tree and sells them for $80 each. She will incur an additional cost of $6 each for unsold trees that must be hauled to the landfill. If demand for Christmas trees is normally distributed with a mean of 365 trees and a standard deviation of 46 trees, how many trees should she order, to the next unit?