Ambrosia Foods produces a gourmet condiment that sells for $24 per unit. Variable cost is $6 per unit, and fixed costs are $8,000 per month. If Ambrosia expects to sell 1,500 units, compute the margin of safety in units. (Round any intermediate calculations and your final answer to the nearest whole unit.) are $8,000 per month. If Ambrosia eral answer to the nearest whole unit.)