Consider the market for wheat where demand is given by: Q' = 150-4p and supply is given by: Q = 20 + 2p. Now suppose that, due to a market failure (an artificial shipping constraint), a maximum of 53.32 units of wheat can be supplied by firms in the market. The amount of the deadweight loss caused by the market failure is $ . (Enter your answer rounded to the nearest penny and as a positive number.)