Consider the market for first-aid training classes. Market demand is given by P = 600 - Q. Market supply is given by P = Q. Individuals who have received first-aid training are very helpful in some urgent situations which is captured in a positive spillover, or externality, equal to Q/8. This is thus an external benefit related to the consumption of first-aid training. What is the deadweight loss if the externality is not dealt with? [Round your answer to 2 decimal places when needed]