Explain what is the margin of safety and how is it calculated Determine how much is his margin of safety expressed in sales revenue and in the number of units for the compary below.

ABC Company is owned and operated by a crattsman who makes elaborate birdcages. It is currently producing $40$ bircages per month Cost data are as follows:

Price $$720$ per unit

Variable cost $$470$ per unit

Fixed costs $$8,000$ per month